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| Performance Analysis of MC-CDMA System in a Multipath Fading Channel |
| Yang Wei①②; Li Hang①; Tan Zhen-hui①; Cheng Shi-xin② |
| ①Modern Telecommunication Institute, Beijing Jiaotong University, Beijing 100044, China;②National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China |
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Abstract In this paper, a reformed MC-CDMA scheme is proposed, which choose the symbol period transmitted multiple the chip period. This allows each subcarrier undergoes frequency selective fading channel and avoids the limitation on the chip rate and symbol rates of the former scheme, and furthermore it guarantees the multipath signals can be separated effectively. The Bit Error Rate (BER) expression is derived in a multipath fading channel, which is verified through simulations. Compared with the typical MC-CDMA scheme the BER performance of the proposed system is improved significantly because of the extra path gain.
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Received: 04 November 2005
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2007, Vol. 29 
