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Performance Analysis of Maximal Ratio Combining Diversity in DS-CDMA Systems |
Sheng Bin; You Xiao-hu |
National Mobile Communications Research Laboratory Southeast Univ.,Nanjing 210096 China |
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Abstract A new expression for the Bit Error Rate(BER) of a Direct-Sequence Code-Division Multiple-Access (DS-CDMA) system with non-ideal channel estimation in a frequency-selective Rayleigh fading channel is derived and evaluated. The analysis assumes an arbitrary number of independent, but non-identical resolvable paths combined by the conventional Maximal Ratio Combining(MRC) algorithm which is known to produce maxi-mal signal-to-noise ratio for diversity channels with equal noise powers and perfect channel estimates. The results obtained show that in such systems, the effects of non-identical fading and the channel estimation error on system performance cannot be ignored.
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Received: 24 April 2003
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