hash stringlengths 32 32 | doc_id stringlengths 5 12 | section stringlengths 5 1.47k | content stringlengths 0 6.67M |
|---|---|---|---|
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 4.7.0 Explanation difference | In 1.28 Mcps TDD the random access procedure follows a two step approach. After the 1st step (UpPCH) the FPACH also carries the information fields related to the initialisation of uplink synchronisation control and uplink power control for the PRACH (2nd step). This is ensuring that the PRACH can be transmitted in the ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 4.7.1 Received starting position of the UpPCH (UpPCHPOS) (1.28 Mcps TDD) | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 4.7.1.1 Range/mapping | Table 4.16
Range/mapping
UpPCHPOS FIELD is given with a resolution of 1/8 chip with the range [0,255.875] chip.
UpPCHPOS FIELD shall be transmitted in the FPACH where:
UpPCHPOS FIELD_LEV_0000: UpPCHPOS < 0 chip
UpPCHPOS FIELD_LEV_0001: 0 chip UpPCHPOS < 0.125 chip
UpPCHPOS FIELD_LEV_0002: 0.125 chip ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 4.7.1.2 Accuracy requirements | Table 4.17
Parameter
Unit
Accuracy
Conditions
Range [chips]
Received starting position of the UpPCH
chips period
+/- 0.125
0, …, 255.875 |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 4.7.2 Transmit Power Level Command for the RACH message (1.28 Mcps TDD) | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 4.7.2.1 Range/mapping | Table 4.18
Range/mapping
PRXPRACH,des FIELD is given with a resolution of 0.5 dB with the range [-120,-80] dBm.
PRXPRACH,des FIELD shall be transmitted in the FPACH where:
PRXPRACH,des FIELD_LEV_00: PRXPRACH,des < -120 dBm
PRXPRACH,des FIELD_LEV_01: -120 dBm PRXPRACH,des < -119.5 dBm
PRXPRACH,des FIELD_LEV_02... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 4.7.2.2 Accuracy requirements | Since this is a desired RX power at the node B and this is no measured value and the derivation of this value in the node B is implementation specific, accuracy requirements are not applicable. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5 UE Radio Transmission and Reception | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.1 Frequency bands and channel arrangement | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.1.1 General | The information presented in this section is based on a chip rate of 1.28 Mcps. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.1.2 Frequency bands | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.1.3 TX–RX frequency separation | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.1.3.1 Description | No TX-RX frequency separation is required as Time Division Duplex (TDD) is employed. Each subframe of 1.28 Mcps TDD consists of 7 main timeslots (TS0 ~ TS6) where TS0 (before DL to UL switching point) are always allocated DL, the timeslots (at least the first one) before the switching point (vice versa) are allocated U... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.1.3.2 Explanation of difference | The frame structure for 3.84 Mcps TDD and 1.28 Mcps TDD is different. For 3.84 Mcps TDD, each TDMA frame consists of 15 timeslots where each timeslot can be allocated to either transmit or receive. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.1.4 Channel arrangement | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.1.4.1 Channel spacing | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.1.4.1.1 Background | The chip rate is 1.28 Mcps with a roll-off factor of 0.22, therefore the occupied bandwidth is1.6MHz. It is just nominal 1.6MHz, and it is also flexible to adjust the channel raster step 200kHz to narrow as 1.4MHz for strict requirement situations if needed. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.1.4.1.2 Channel spacing | The channel spacing for 1.28 Mcps chip rate option is 1.6MHz. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.1.4.2 Channel raster | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.1.4.3 Channel number | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2 Transmitter characteristics | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.1 General | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.2 Transmit power | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.2.1 User Equipment maximum output power | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.3 UE frequency stability | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.4 Output power dynamics | Power control is used to limit the interference level. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.4.1 Open loop power control | Open loop power control is the ability of the UE transmitter to sets its output power to a specific value. The open loop power control tolerance is given in Table 5.1 |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.4.1.1 Minimum requirement | The UE open loop power is defined as the average power in a timeslot or ON power duration, whichever is available, and they are measured with a filter that has a Root-Raised Cosine (RRC) filter response with a roll off and a bandwidth equal to the chip rate.
Table 5.1: Open loop power control
Normal conditions... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.4.2 Closed loop power control in the uplink | Closed loop power control in the Uplink is the ability of the UE transmitter to adjust its output power in accordance with one or more TPC commands received in the downlink. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.4.2.1 Power control steps | The power control step is the change in the UE transmitter output power in response to a single TPC command, TPC_cmd, arrived at the UE. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.4.2.1.1 Minimum requirement | The UE transmitter shall have the capability of changing the output power with a step size of 1, 2 and 3 dB according to the value of TPC or RP-TPC, in the slot immediately after the TPC_cmd can be arrived.
a) The transmitter output power step due to closed loop power control shall be within the range shown in Table ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.4.3 Minimum transmit output power | The minimum controlled output power of the UE is when the power control setting is set to a minimum value. This is when both the closed loop and open loop power control indicate a minimum transmit output power is required. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.4.3.1 Minimum requirement | The minimum transmit power is defined as an averaged power in a time slot measured with a filter that has a Root-Raised Cosine (RRC) filter response with a roll off and a bandwidth equal to the chip rate. The minimum transmit power shall be better than –49 dBm/1.28MHz. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.4.3.2 Rationale | For the power control issue, the open loop and closed loop power control procedure is introduced in 1.28 Mcps TDD option [4], basically has the similar requirements as that of UTRA FDD.
The minimum transmit output power is basically kept in line with 3.84 Mcps TDD mode, just considering the RRC measurement filter bandw... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.4.4 Out-of-synchronisation handling of output power | The UE shall monitor the DPCH quality in order to detect a loss of the signal on Layer 1. The thresholds Qout and Qin specify at what DPCH quality levels the UE shall shut its power off and when it may turn its transmitter on, respectively. The thresholds are not defined explicitly, but are defined by the conditions un... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.4.4.1 Requirement | The parameters in Table 5.4 are defined using the DL reference measurement channel (12.2) kbps specified in Annex C.2.1, where the CRC bits are replaced by data bits, and with static propagation conditions.
Table 5.4: DCH parameters for test of Out-of-synch handling
Parameter
Unit
Value
dB
-1
dBm/1.28 MHz
-60
dB
See fi... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.4.4.2 Rationale | A test procedure was introduced for the case of testing the UE ability to shut down its power if the received power is bellow a certain limit. The power will be varied at the input of the 3.84 Mcps TDD Option UE according to the following figure:
Figure 5.2: Conditions for out-of-synch handling in the 3.84 Mcps TDD Opt... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.5 Transmit ON/OFF power | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.5.1 Transmit OFF power | The transmit OFF power state is when the UE does not transmit. This parameter is defined as the maximum output transmit power within the channel bandwidth when the transmitter is OFF. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.5.1.1 Minimum Requirement | The requirement for transmit OFF power shall be better than 65dBm measured with a filter that has a Root-Raised Cosine (RRC) filter response with a roll off =0.22 and a bandwidth equal to the chip rate. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.5.1.2 Rational | In TDD mode, various users are transmitting and receiving on the same frequency band. A maximum transmit output power in the transmitter idle mode has to be defined not to affect other nearby receiving mobiles or BSs. Then received power due to a near by UE has to be required below the noise floor.
The maximum acceptab... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.5.2 Transmit ON/OFF Time mask | The time mask transmit ON/OFF defines the tramping time allowed for the UE between transmit OFF power and transmit ON power. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.5.2.1 Minimum Requirement | The transmit power level versus time shall meet the mask specified in figure 5.3, where the transmission period refers to the burst without guard period for a single transmission slot, and to the period from the beginning of the burst in the first transmission slot to the end of the burst without guard period in the la... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.5.2.1 Rationales | A time mask should be included for relevant UE transmit power on/off scenarios. Requirements should be specified to limit impact on system performance and allow reasonable implementation.
To limit impact on the system performance, the time allowed for ramping should be small compared to the time period of continuous tr... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.5.2.1.1 Timing advance | For large cells, the timing advance is necessary, otherwise channel estimation will not work properly. Currently, a cell radius of having 8.7km for rural/macro case is assumed for illustration. This corresponds to round trip delay of 58s. 29us for timing advance is expected.. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.5.2.2 Switching time | Based on state-of-art semiconductor technology, about 10us of switching time could be expected to easy to handle and implementation in UE side. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.5.2.3 Delay spread | Under typical urban fading conditions, delay spread is mostly not greater than 3.125s (4chips) |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.5.2.4 BS Synchronization accuracy | The timing error of BSs synchronized to each other shall be less than 3.125us (4chips)
The figure 5.4 illustrates a situation,
Figure 5.4: Cell with timing advance
Based on above analysis and consideration, the 13chips(10us) period in 1.28 Mcps TDD UE is feasible for ramp up.
Considering the easy implementation aspects... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6 Output RF spectrum emissions | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.1 Occupied bandwidth | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.1.1 Description | Occupied bandwidth is a measure of the bandwidth containing 99% of the total integrated power for transmitted spectrum and is centered on the assigned channel frequency. The occupied channel bandwidth is about 1.6 MHz based on a chip rate of 1.28 Mcps. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.1.2 Explanation of difference | In 3.84 Mcps TDD, the occupied channel bandwidth is less than 5MHz based on 3.84 Mcps.
But in 1.28 Mcps TDD, as the background analysis in WG4#12 Meeting Tdoc515, which has been accepted to into the TR25.945, the occupied channel bandwidth should be less than 1.6 MHz based on 1.28 Mcps. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.2 Out of band emission | Out of band emissions are unwanted emissions immediately outside the nominal channel resulting from the modulation process and non-linearity in the transmitter but excluding spurious emissions. This out of band emission limit is specified in terms of a spectrum emission mask and adjacent channel power ratio. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.2.1 Spectrum emission mask | The spectrum emission mask of the UE applies to frequencies, which are between 0.8 and 4.0MHz from a carrier frequency. The out of channel emission is specified relative to the UE output power in measured in a 1.28 MHz bandwidth. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.2.1.1 Minimum Requirement | The power of any UE emission shall not exceed the levels specified in Table 5.5.
Table 5.5: Spectrum Emission Mask Requirement (1.28 Mcps chip rate option)
Frequency offset from carrier Δf
Minimum requirement
Measurement bandwidth
0.8 MHz
-35 dBc
30 kHz
0.8-1.8 MHz
-35 – 14*(f-0.8) dBc
30 kHz
1.8-2.4 MHz
-49 – 17*(f-... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.2.1.2 Rationale | Based on the discussion, the mask in Table 5.6 is proposed for power class 5 (21 dBm), given in dBc compared with 21dBm/1.28MHz. The rationale for each specification point is outlined in the table together with the proposed mask and the corresponding mask values, measured in 30 kHz (the smallest measurement bandwidth u... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.2.1.2.1 Frequency offset | In FCC, frequency offset reference is the allocated band edge. Since spectrum definition has to be independent of operator allocation, the reference has been changed to the center frequency of the measured carrier. Assuming that the nominal carrier spacing is 1.6MHz for low chip rate TDD option, so spectrum mask defini... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.2.1.2.2 Measurement bandwidth | The "-26dB modulation bandwidth" is approximately equal to 1.46MHz in low chip rate option. This leads to 14.6kHz-measurement bandwidth. Since this value is not available in most measurement devices such as spectrum analyzers, a standard value of 30kHz was adopted. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.2.1.2.3 Mask shape | 1) According to FCC rules, the emission should be –13dBm/14.6kHz or –10dBm/30kHz. But in accordance with the 3.84 Mcps TDD emission only –14dBm is allowed to have no more ‘dBm/Hz power‘ in the adjacent band as the 3.84 Mcps TDD has. (Because the physical origin of the modulation side band is the same in both cases the ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.2.2 Adjacent Channel Leakage power Ratio (ACLR) | Adjacent Channel Leakage power Ratio (ACLR) is the ratio of the transmitted power to the power measured in an adjacent channels. Both the transmitted power and the adjacent channel power are measured with a filter response that has a Root-Raised Cosine (RRC) filter response with roll-off = 0.22 and a bandwidth equal ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.3 Spurious emissions | Spurious emissions are emissions which are caused by unwanted transmitter effects such as harmonics emission, parasitic emission, intermodulation products and frequency conversion products, but exclude out of band emissions.
The frequency boundary and the detailed transitions of the limits between the requirement for o... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.3.1 Minimum Requirement | These requirements are only applicable for frequencies which are greater than 4 MHz away from the UE center carrier frequency.
Table 5.8 : General Spurious emissions requirements
Frequency Bandwidth
Resolution Bandwidth
Minimum requirement
9 kHz f < 150 kHz
1 kHz
-36 dBm
150 kHz f < 30 MHz
10 kHz
-36 dBm
30 MHz f... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.6.3.2 Explanation of difference | The UE TX Spurious emissions requirements basically keep in line with UTRAN FDD and 3.84 Mcps TDD.
For the frequency offset, as ITU specification SM.329 [16] , the frequency limit between out of band emissions and spurious emissions is defined as 250% of the necessary bandwidth. In 1.28 Mcps option the necessary bandwi... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.7 Transmit intermodulation | The transmit intermodulation performance is a measure of the capability of the transmitter to inhibit the generation of signals in its non linear elements caused by presence of the wanted signal and an interfering signal reaching the transmitter via the antenna. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.7.1 Minimum requirements | User Equipment(s) transmitting in close vicinity of each other can produce intermodulation products, which can fall into the UE, or BS receive band as an unwanted interfering signal. The UE intermodulation attenuation is defined by the ratio of the output power of the wanted signal to the output power of the intermodul... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.8 Transmit Modulation | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.8.1 Transmit pulse shape filter | The transmit pulse-shaping filter is a root-raised cosine (RRC) with roll-off =0.22 in the frequency domain. The impulse response of the chip impulse filter RC0(t) is
Where the roll-off factor =0.22 and the chip duration: |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.8.2 Error Vector Magnitude | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.8.2.1 Minimum Requirement | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.8.3 Peak Code Domain Error | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.8.3.1 Minimum Requirement | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.2.8.3.1 Rationale | For 3.84 Mcps and FDD, the minimum requirements for the error vector magnitude and peak code domain error ensures that:
- the error vector magnitude does not degrade the performance
- the error vector magnitude leads only to low increase for the transmitted output power to remain the Eb/N0
The theoretical investigation... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3 Receiver characteristics | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.1 General | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.2 Diversity characteristics | Common with 3.84 Mcps TDD option. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.3 Reference sensitivity level | The reference sensitivity is the minimum receiver input power measured at the antenna port at which the BIT Error Ratio BER does not exceed a specific value. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.3.1 Minimum Requirements | The BER shall not exceed 0.001 for the parameters specified in Table 5.11.
Table 5.11: Test parameters for reference sensitivity
Parameter
Level
Unit
0
dB
-108
dBm/1.28 MHz |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.3.2 Simulation results | The simulation is done to 12.2kb/s data in static propagation condition for UE of 1.28 Mcps TDD..The service-mapping is specified in ANNEX C, and the simulation assumption is specified in section 9.
Figure 5.6
Table 5.12
Îor/Ioc
Pb
-0.49
5.09E-2
-0.03
2.12E-2
0.41
8.11E-3
0.82
2.90E-3
1.25
8.12E-4
1.68
1.23E-4
1.95
2.6... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.3.3 Rationale | the simulations has been made with =-7dB. That means that the reference sensitivity is PNoise+Noise-Figure+Îor/IocLimit-Own_Code_Power+Implementaion_Margin=-113dBm+9dB+1.2dB-7dB+2dB=-107.7dBm. Roughly -108dBm which is the defined reference sensitivity level. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.4 Maximum input level | This is defined as the maximum receiver input power at the UE antenna port which does not degrade the specified BER performance. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.4.1 Minimum Requirements | The BER shall not exceed 0.001 for the parameters specified in Table 5.13
Table 5.13: Maximum input level
Parameter
Level
Unit
-7
dB
-25
dBm/1.28 MHz |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.5 Adjacent Channel Selectivity (ACS) | Adjacent Channel Selectivity is a measure of a receiver’s ability to receive a wanted signal at its assigned channel frequency in the presence of adjacent channel signal at a given frequency offset from the centre frequency of the assigned channel. ACS is the ratio of the receive filter attenuation on the assigned chan... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.5.1 Minimum Requirement | The ACS shall be better than the value indicated in Table 5.14 for the test parameters specified in Table 5.15 where the BER shall not exceed 0.001
Table 5.14: Adjacent Channel Selectivity
Power Class
Unit
ACS
2
dB
33
3
dB
33
Table 5.15: Test parameters for Adjacent Channel Selectivity
Parameter
Unit
Level
dB
0
Îor
dBm... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.5.2 Rationale | The ACS performance of terminals is largely determined by an IF filter (usually a SAW), the A/D converter and digital baseband filtering. And the ACS requirements should reflect what can be achieved with present state of the art technology. So we can select the same receiver filter performance as 3.84 Mcps TDD, ACS equ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.6 Blocking characteristics | The blocking characteristics is a measure of the receiver ability to receive a wanted signal at its assigned channel frequency in the presence of an unwanted interferer on frequencies other than those of the spurious response or the adjacent channels without this unwanted input signal causing a degradation of the perfo... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.6.1 Minimum Requirement | The BER shall not exceed 0.001 for the parameters specified in table5.16 and table 5.17. For table 5.17 up to 24 exceptions are allowed for spurious response frequencies in each assigned frequency channel when measured using a 1MHz step size.
Table 5.16: In-band blocking
Parameter
Offset
Offset
Unit
Wanted Signal Level... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.6.2 Rationale | |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.6.2.1 3.2 MHz blocking requirement | From [17,18] the required interfering signal level can be calculated, just like FDD (which is of course true only if the wanted signal is 3dB above the reference level), |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.6.2.2 ACS, Adjacent channel selectivity and NF, Noise figure | In the equations above, the ACS2 is assumed as 43dB, and NF is assumed as 9dB. The principle is basically like FDD and 3.84 Mcps TDD, just the chiprate has been changed, so the in band blocking value is also scalable changed.
Considering the chiprate is 1.28 Mcps, so the unwanted signal frequency offset is also scalabl... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.6.2.3 Out of band blocking requirement | The relevant frequency bands for out of band blocking are calculated according to the specified frequency bands for FDD in [19] and 3.84 Mcps TDD in [1]. The 3dB tougher requirement comparing to the WTDD/FDD is based on the assumption that the overall interference power is the same as in the other cases due to the same... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.7 Spurious response | Spurious response is a measure of the receiver’s ability to receive a wanted signal on its assigned channel frequency without exceeding a given degradation due to the presence of an unwanted CW interfering signal at any other frequency at which a response is obtained i.e. for which the blocking limit is not met. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.7.1 Minimum Requirements | For the 1.28 Mcps chip rate option, the requirement of Spurious response for carrier spacing 1.6MHz is prescribed in the following table.
Table 5.18: Spurious Response (1.28MHz chiprate)
Parameter
Level
Unit
Wanted Signal Level
<REFSENS> + 3 dB
dBm/1.28 MHz
Unwanted Signal Level (CW)
-44
dBm
Fuw
Spurious response frequ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.7.2 Rationale | The 3dB tougher requirement comparing to the WTDD/FDD is based on the assumption that the overall interference power is the same as in the other cases due to the same deployment scenarios. The NTDD UE has to withstand the same interference power as the WTDD/FD UE has to. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.8 Intermodulation characteristics | Third and higher order mixing of the two interfering RF signals can produce an interfering signal in the band of the desired channel. Intermodulation response rejection is a measure of the capability of the receiver to receiver a wanted signal on its assigned channel frequency in the presence of two or more interfering... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.8.1 Minimum Requirements | For the 1.28 Mcps chip rate option, the requirement of intermodulation for carrier spacing 1.6MHz is prescribed in the following table.
Table 5.19: Receive intermodulation characteristics (1.28MHz chiprate)
Parameter
Level
Unit
0
dB
Îor
<REFSENS> + 3 dB
dBm/1.28 MHz
Iouw1 (CW)
-46
dBm
Iouw2 (modulated)
-46
dBm/1.28 MHz... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.8.2 Rationale | The 3dB tougher requirement comparing to the WTDD/FDD is based on the assumption that the overall interference power is the same as in the other cases due to the same deployment scenarios. The NTDD UE has to withstand the same interference power as the WTDD/FD UE has to. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.9 Spurious emissions | The Spurious Emissions Power is the power of emissions generated or amplified in a receiver that appear at the UE antenna connector. |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.9.1 Minimum Requirement | The power of any spurious emission shall not exceed:
Table 5.20: Receiver spurious emission requirements
Band
Maximum level
Measurement Bandwidth
Note
9 kHz – 1 GHz
-57 dBm
100 kHz
1 GHz – 1.9 GHz and
1.92 GHz – 2.01 GHz and
2.025 GHz – 2.11 GHz
-47 dBm
1 MHz
With the exception of frequencies between 4MHz below the fir... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.3.9.2 Rationale | The inband (Band 3 in the above table) RX spurious emission value could be conducted as below.
Assumptions:
- The Noise Figure (NF) of the UE receiver is 9dB;
- The MCL for UE’s is 40dB.
So the derivation is as follows:
Spurious level – MCL (Minimum Coupling Loss) < Thermal noise
Spurious level < Thermal noise + MCL = ... |
1cc4b09fd057c9a5cf925fb9b5a5f4e7 | 25.945 | 5.4 Performance requirement |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.