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Simulated performance of coded digital transmission in a multi-user indoor radio communications environment

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3 Author(s)
Hanna, S.A. ; Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada ; El-Tanany, M. ; Mahmoud, S.A.

The performance of error correction codes in conjunction with different diversity methods is investigated in a simulated multi-user indoor radio communications environment in the presence of a single interferer. Bit-error curves are presented for soft-decision convolution coding and for trellis coding with simple diversity methods. The degradation in bit error rate caused by CCI (co-channel interference) on uncoded QPSK (quadrature phase-shift keying), convolutionally coded QPSK, and trellis-coded 8-PSK is presented. The results indicate that the given trellis codes (without interleaving) have poor performance in a Rayleigh fading medium; their performance is even worse in the presence of both fading and CCI. The performance of soft-decision convolutional coding was much better than that of trellis, but at the expense of increasing the channel bandwidth

Published in:

Vehicular Technology Conference, 1991. Gateway to the Future Technology in Motion., 41st IEEE

Date of Conference:

19-22 May 1991

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