Title :
Coherent demodulation for IS-95 uplink
Author :
Schramm, Peter ; Huber, Johannes
Author_Institution :
Lehrstuhl fur Nachrichtentech., Erlangen-Nurnberg Univ., Germany
Abstract :
In the uplink of the IS-95 mobile communication standard, an orthogonal modulation scheme combined with binary convolutional coding and binary interleaving is defined. In Viterbi et al. (1993), a receiver with non-coherent demodulation is proposed for this transmission system. In this paper, a receiver with coherent demodulation and decision-directed channel estimation is introduced. Comparisons of both schemes show that the use of coherent demodulation leads to a significant gain compared to non-coherent demodulation
Keywords :
convolutional codes; decision theory; demodulation; estimation theory; land mobile radio; modulation coding; radio receivers; telecommunication standards; IS-95 mobile communication standard; binary convolutional coding; binary interleaving; coherent demodulation; decision-directed channel estimation; orthogonal modulation scheme; receiver; uplink; Channel estimation; Demodulation; Downlink; Interleaved codes; Land mobile radio; Mobile communication; Modulation coding; Multiaccess communication; Phase modulation; Phase shift keying;
Conference_Titel :
Spread Spectrum Techniques and Applications Proceedings, 1996., IEEE 4th International Symposium on
Conference_Location :
Mainz
Print_ISBN :
0-7803-3567-8
DOI :
10.1109/ISSSTA.1996.563470
