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A Performance Analysis of CDMA System Based on the Combination of Bandwidth Expansion  

Ryu, Kil-Hyen (Samsung Electronics)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.47, no.11, 2010 , pp. 14-18 More about this Journal
Abstract
We propose a performance analysis of code division multiple access systems based on the combination of M-ary and pseudo-noise spreading. In spite of the total bandwidth expansion being equal, there is a difference in the system performance by the combination of M-ary and pseudo-noise spreading. The proposed analysis uses each bandwidth expansion, caused by M-ary and pseudo-noise spreading, rather than the total bandwidth expansion. If the signal to interference plus noise ratio becomes high, it is more effective to reduce biterror rate by bandwidth expansion of M-ary modulation rather than that of pseudo-noise spreading. Since the proposed analysis reflects the effect of the M-ary modulation, the bit error rate from the proposed analysis is closer to the results of the simulation than from the conventional analysis.
Keywords
CDMA; PN spreading; M-ary modulation; Mobile communication;
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