頁籤選單縮合
題 名 | Performance Analysis of MC-CDMA Communication Systems over Nakagami-M Environments |
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作 者 | Chen, Joy Iong-zong; | 書刊名 | Journal of Marine Science and Technology |
卷 期 | 14:1 民95.03 |
頁 次 | 頁58-63 |
分類號 | 448.6 |
關鍵詞 | MC-CDMA system; Uncorrelated channels; Correlated channels; Nakagami-m fading; |
語 文 | 英文(English) |
英文摘要 | ABSTRACT 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. |
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