Title :
Orthogonal trans multiplexer: A multiuser communications platform from FDMA to CDMA
Author :
Akansu, Ali N. ; Taztbay, Mehmet V.
Author_Institution :
New Jersey Institute of Technology, Department of Electrical and Computer Engineering, Center for Communications and Signal Processing Research, University Heights, Newark, NJ 07102
Abstract :
Orthogonal transmultiplexers have been successfully utilized for multi-user communications. They are of the FDMA type in their most common version. Mostly, frequency-selective PR-QMFs were used in transmultiplexers as orthogonal user codes for CDMA communications reported in the literature. This conflicts with the fundamentals of CDMA theory. We introduce novel M-valued spread spectrum PR-QMF codes in this paper. It is shown that the proposed M-valued spread spectrum PR-QMF codes with minimized auto- and cross-correlation properties outperform the conventional Gold codes in CDMA communication scenarios considered in the paper.
Keywords :
Filter banks; Frequency division multiaccess; Frequency division multiplexing; Gold; Time-frequency analysis;
Conference_Titel :
European Signal Processing Conference, 1996. EUSIPCO 1996. 8th
Conference_Location :
Trieste, Italy
Print_ISBN :
978-888-6179-83-6
