Title :
A general model for multiple access communications
Author :
Baoyu, Zheng ; Lei, Li
Author_Institution :
Dept. of Inf. Eng., Nanjing Univ. of Posts & Telecommun., China
Abstract :
A general model for multiple access methods (FDMA, TDMA and CDMA) is given. We point out that if orthogonality is determined by transmitter and receiver jointly, better performance can be obtained. Using some reasonable assumptions on the channel in the model, we deduce the Lagrange/Vandermonde system where orthogonality is determined by transmitter and receiver jointly and its BER performance is much better than that of a conventional CDMA system using Gold codes, while the time-varying multipath channel adopted here is different from that in Scaglione et al., 1997
Keywords :
code division multiple access; error statistics; frequency division multiple access; multipath channels; receivers; time division multiple access; time-varying channels; transmitters; BER; CDMA; FDMA; Lagrange/Vandermonde system; TDMA; general model; multiple access communications; orthogonality; performance; receiver; time-varying multipath channel; transmitter; Bit error rate; Electronic mail; Frequency division multiaccess; Lagrangian functions; Multiaccess communication; Sampling methods; Sequences; Signal processing; Time division multiple access; Transmitters;
Conference_Titel :
Communication Technology Proceedings, 2000. WCC - ICCT 2000. International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-6394-9
DOI :
10.1109/ICCT.2000.889164
