A divide-and-conquer approach with adaptive modulation to CDMA systems

A new divide-and-conquer scheme has been proposed with adaptive modulation in CDMA system to improve the spectrum efficiency of the wireless communication system. The proposed method results in increase in average throughput achieved and simultaneously decrease in the outage probability of the system when the user density is high. The proposed scheme is compared with the existing algorithms and the advantage of the scheme is evident from the results obtained.

[1]  Xiaoxin Qiu,et al.  On the performance of adaptive modulation in cellular systems , 1999, IEEE Trans. Commun..

[2]  Gordon L. Stüber,et al.  Analysis of a direct-sequence spread-spectrum cellular radio system , 1993, IEEE Trans. Commun..

[3]  N. Morinaga,et al.  Symbol rate and modulation level controlled adaptive modulation/TDMA/TDD for personal communication systems , 1995, 1995 IEEE 45th Vehicular Technology Conference. Countdown to the Wireless Twenty-First Century.

[4]  Andrew J. Viterbi,et al.  Erlang Capacity of a Power Controlled CDMA System , 1993, IEEE J. Sel. Areas Commun..

[5]  Andrew J. Viterbi,et al.  Erlang Capacity of a Power Controlled Cdma System , 1993, Proceedings. IEEE International Symposium on Information Theory.

[6]  A. Viterbi.  CDMA: Principles of Spread Spectrum Communication , 1995 .

[7]  Gordon L. Stüber.  Principles of mobile communication , 1996 .

[8]  Dimitri P. Bertsekas,et al.  Data Networks , 1986 .