A5.2 Standard test signals

3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS

The Cx signals represent the wanted signals and the Ix signals represent the unwanted signals.

Signal C0 Unmodulated continuous carrier.

Signal C1 A standard signal with GMSK AQPSK, 8-PSK, 16-QAM or 32-QAM modulation as appropriate. The channel coder will depend on the test and the cipher mode shall be selectable by the test method. When using this signal in the non hopping mode, the unused seven time slots shall also contain dummy bursts, with power levels variable with respect to the used timeslot, see also DYNAMIC LEVEL SETTING in subclause A5.3.4.7.

Signal I0 Unmodulated continuous carrier.

Signal I1 A GMSK modulated carrier following the structure of the GSM signals, but with all modulating bits (including the midamble period) derived directly from a random or pseudo random data stream.

Signal I2 A standard GMSK modulated signal with valid midamble, different from C1. The data bits (including bits 58 and 59) shall be derived from a random or pseudo random data stream.

Signal I3 An Additive White Gaussian Noise (AWGN) signal having a minimum bandwidth of 1,5 times the symbol rate i.e. minimum 402,6kHz for a GSM channel. The AWGN power shall be measured over a noise bandwidth of 270,833 kHz. In the complex baseband, the AWGN signals shall be independent in the real and in the imaginary part, zero-mean and with equal power.

Signal I4 A GMSK modulated signal with valid training sequence code (TSC) randomly selected on a burst-by-burst basis from {TSC1,…,TSC7}. The interferer shall be a single slot wide, and shall apply power ramping according to the requirements in 3GPP TS 45.005. The interferer shall be delayed with respect to the wanted signal by an integer number of symbols in the range –1 to +4. Unless specified in a given test case, The delay shall be randomly chosen and shall remain fixed for the duration of the test.

Signal I5 A GMSK modulated signal following the structure of the GSM signals, but with all modulating bits (including the midamble period) derived directly from a random or pseudo random data stream. The interferer shall be a single slot wide, and shall apply power ramping according to the requirements in 3GPP TS 45.005. The interferer shall be delayed with respect to the wanted signal by 74 symbols.

NOTE: For multi-slot configuration the same number of active slots for test signal I4 and I5 shall be used.