The performance for a MC-CDMA (multi-carrier coded-division multiple-access) system working in uncorrelated and correlated fading channels with Nakagami distribution is investigated in this paper. We adopt the BPSK modulation scheme with an alternative expression for Q-function to evaluate the BER (bit error rate) performance of the MC-CDMA system. The sum of Gamma variates is adopted for deriving a closed-form solution for arbitrarily correlated channel in order to avoid the difficulty of explicitly obtaining the pdf (probability density function) for the SNR (signal-to-noise ratio) at the MRC (maximum ratio combining) output. The results with simple expression obviously show that the BER performance of the MC-CDMA system is sensitive to the correlation of fading channels.
Chen, Joy Iong-Zong
"PERFORMANCE ANALYSIS OF MC-CDMA COMMUNICATION SYSTEMS OVER NAKAGAMI-M ENVIRONMENTS,"
Journal of Marine Science and Technology: Vol. 14
, Article 6.
Available at: https://jmstt.ntou.edu.tw/journal/vol14/iss1/6