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Asymptotic coding gains in multiuser systems

Publication ,  Conference
Zhang, X; Brady, D
Published in: IEEE Vehicular Technology Conference
January 1, 1995

In this work the asymptotic multiuser coding gain (AMCG) as well as asymptotic multiuser efficiency (AME) are found for K coded asynchronous users and a variety of multiuser detectors, including optimum (MLS), multistage, decorrelated and conventional detectors. Since the direct sequence can be viewed as a special kind of block repetition codes, it gives zero (dB) coding gain in power-limited application. It is shown that some block encoding schemes with (n, k), k > 1 can provide direct-sequence spread-spectrum modulation and give positive coding gain. These systems combined with the narrow-band signature waveforms are shown to outperform their conventional approachs with the same bandwidth expansion constraint.

Duke Scholars

Published In

IEEE Vehicular Technology Conference

ISSN

0740-0551

Publication Date

January 1, 1995

Volume

2

Start / End Page

619 / 623
 

Citation

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Zhang, X., & Brady, D. (1995). Asymptotic coding gains in multiuser systems. In IEEE Vehicular Technology Conference (Vol. 2, pp. 619–623).
Zhang, X., and D. Brady. “Asymptotic coding gains in multiuser systems.” In IEEE Vehicular Technology Conference, 2:619–23, 1995.
Zhang X, Brady D. Asymptotic coding gains in multiuser systems. In: IEEE Vehicular Technology Conference. 1995. p. 619–23.
Zhang, X., and D. Brady. “Asymptotic coding gains in multiuser systems.” IEEE Vehicular Technology Conference, vol. 2, 1995, pp. 619–23.
Zhang X, Brady D. Asymptotic coding gains in multiuser systems. IEEE Vehicular Technology Conference. 1995. p. 619–623.

Published In

IEEE Vehicular Technology Conference

ISSN

0740-0551

Publication Date

January 1, 1995

Volume

2

Start / End Page

619 / 623