CDMA Reference Blockset | ![]() ![]() |
IS-95A Base Station Receiver Library
The Base Station Receiver Library provides the blocks required to perform the CDMA system base station or reverse link receiver functions.
Function |
Block(s) |
Combining of the different rake fingers and the subsequent Walsh demodulation of the combined signal, while also accounting for the randomized transmit bursts |
IS-95A Rev Ch Detector (includes IS-95A Rev Ch Rake Finger and IS-95A Rev Ch Walsh Demodulator) IS-95A Rev Ch Walsh Demodulator |
Noncoherent rake correlator that despreads the signal by correlating with the short and long PN codes and the Walsh sequences |
IS-95A Rev Ch Rake Finger (includes IS-95A Rev Ch Short Code Despreader and IS-95A Rev Ch Walsh Correlator) IS-95A Rev Ch Short Code Despreader |
Correlation of the received and despread sequences with the Walsh sequences |
IS-95A Rev Ch Walsh Correlator |
Channel decoding of the raw data to recover the speech or user data |
IS-95A Rev Ch Viterbi Decoder |
![]() | IS-95A Mobile Station Transmitter Library | IS-95A Common Library | ![]() |