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| Channel Estimation in Time Domain and Frequency Domain for Multiuser MC DS-CDMA Systems |
| Ju Mei-yan① Ran Ming② |
| ①(College of Computer and Information Engineering, Hohai University, Nanjing 210098, China) ②(ZTE Corporation, Nanjing 210012, China) |
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Abstract This paper proposes one channel estimation scheme for multiuser MC DS-CDMA systems. Based on the averaged channel estimation in time domain, the averaged channel estimation in frequency domain is used to improve further the performance of channel estimation. The simulation results show that the averaged channel estimation in time domain could largely filter out the Multiple Access Interference (MAI) and noise and improve the accuracy of channel estimation. Followed by one averaged channel estimation in frequency domain, the BER performance of systems still has further improvement. After two times of channel estimation, the system performance approximates to that of the ideal channel estimation.
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Received: 18 September 2007
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Corresponding Authors:
Ju Mei-yan
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2008, Vol. 30 
