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Multi-rate multi-code CDMA using FWT for mobile and personal communications

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2 Author(s)
Madkour, M.F. ; Dept. of Electr. Eng., Southern Methodist Univ., Dallas, TX, USA ; Gupta, Someshwar C.

We simulate a flexible direct sequence-code division multiple access (DS-CDMA) multi-rate system that uses a serial variable processing gain PN modulation together with multi-code modulation. The advantage of serial transmission is that only one waveform is transmitted at a given time resulting in a constant envelope transmission. Multi-code modulation provides a reliable high-speed data communications by using the fast Walsh transform (FWT). The performance of the proposed system is evaluated using computer simulation of different groups of data rates through a frequency selective Rayleigh multipath fading channel

Published in:

Personal, Indoor and Mobile Radio Communications, 1998. The Ninth IEEE International Symposium on  (Volume:2 )

Date of Conference:

8-11 Sep 1998