Asymptotic bounds on the Optimum Multiuser Efficiency of randomly spread CDMA

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(Konferenzbeitrag)


Details zur Publikation

Autor(en): Sedaghat MA, Müller R, Marvasti F
Verlag: IEEE Computer Society
Jahr der Veröffentlichung: 2014
Seitenbereich: 599-603
ISBN: 9783901882630


Abstract


We derive some bounds on the Optimum Asymptotic Multiuser Efficiency (OAME) of randomly spread CDMA as extensions of the result by Tse and Verdú. To this end, random Gaussian and random binary antipodal spreading are considered. Furthermore, the input signal is assumed to be Binary Phase Shift Keying (BPSK). It is shown that in a CDMA system with K-user and N chips when K and N → 8 and the loading factor, K over N, grows logarithmically with K, the OAME converges to 1 almost surely under some condition. It is also shown that a Gaussian randomly spread CDMA system has a performance close to the single user system at high Signal to Noise Ratio (SNR) when the loading factor is kept less than log K over 2. Moreover, for random binary antipodal matrices, we show that the loading factor cannot grow faster than equation. © 2014 IFIP.



FAU-Autoren / FAU-Herausgeber

Müller, Ralf Prof. Dr.-Ing.
Professur für Informationsübertragung


Zitierweisen

APA:
Sedaghat, M.A., Müller, R., & Marvasti, F. (2014). Asymptotic bounds on the Optimum Multiuser Efficiency of randomly spread CDMA. (pp. 599-603). Hammamet: IEEE Computer Society.

MLA:
Sedaghat, Mohammad A., Ralf Müller, and Farokh Marvasti. "Asymptotic bounds on the Optimum Multiuser Efficiency of randomly spread CDMA." Proceedings of the 2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2014, Hammamet IEEE Computer Society, 2014. 599-603.

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