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Coherent DS-CDMA performance in Nakagami multipath fading

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2 Author(s)
T. Eng ; Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA ; L. B. Milstein

The coherent reception of direct sequence-code division multiple access (DS-CDMA) signals in a multipath fading channel is considered. The channel model assumes independent paths with Nakagami fading statistics; this model includes the Rayleigh channel os a special case and is a reasonable model for a frequency-selective fading channel. The bit error rate (BER) performance of a RAKE receiver under various multipath fading conditions is derived and evaluated. The results indicate that over 50 users may access the channel (assuming 127 chips per bit) simultaneously under typical fading conditions, and can achieve an uncoded BER of 0.01 with an average received signal-to-noise ratio per bit of 10 dB.<>

Published in:

IEEE Transactions on Communications  (Volume:43 ,  Issue: 2/3/4 )