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| Impact of RF Self-interference Cancellation Errors on OFDM Based on CCFD System in Multipath Rayleigh Fading Channel |
| He Zhao-jun Shen Ying Shao Shi-hai Qing Chao-jin Tang You-xi |
| National Defense Key Lalpratory on Communications, University of Electronic Science and Technology of China, Chengdu 611731, China |
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Abstract In this paper, the Bit Error Rate (BER) performance of OFDM based on Co-time Co-frequency Full Duplex (CCFD) is analyzed with amplitude estimation error of self-interference and phase error, in remote multi-path Rayleigh fading channel and Additive White Gaussian Noise (AWGN) self-interference channel. The results show that BER generally decreases while the absolute value of time error and amplitude error decreases for fixed Signal to Interference Ratio (SIR). Phase error 6°×10-6 and amplitude error 3×10-5 leads to 0.8 dB degradation on condition of 2.3 GHz carrier frequency, -70 dB SIR, sub-carrier number 4096, sub-carrier separation 15 kHz, BER 10-2. Phase error 0.5° and amplitude error 1% achieved 40 dB Interference Cancellation Ratio (ICR) under the same conditions.
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Received: 15 March 2013
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Corresponding Authors:
Tang You-xi
E-mail: tangyx@uestc.edu.cn
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2014, Vol. 36 
