PP-OFDM with BICM-ID and Postfix Amplitude Optimization

Jiao  Xian-Jun; Xiang Hai-Ge

doi:10.3724/SP.J.1146.2006.00150

Volume 29 Issue 9

Jan. 2011

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Article Navigation > Journal of Electronics & Information Technology > 2007 > 29(9): 2177-2181

Jiao Xian-Jun, Xiang Hai-Ge. PP-OFDM with BICM-ID and Postfix Amplitude Optimization[J]. Journal of Electronics & Information Technology, 2007, 29(9): 2177-2181. doi: 10.3724/SP.J.1146.2006.00150

Citation:

Jiao Xian-Jun, Xiang Hai-Ge. PP-OFDM with BICM-ID and Postfix Amplitude Optimization[J]. Journal of Electronics & Information Technology, 2007, 29(9): 2177-2181. doi: 10.3724/SP.J.1146.2006.00150

Jiao Xian-Jun, Xiang Hai-Ge. PP-OFDM with BICM-ID and Postfix Amplitude Optimization[J]. Journal of Electronics & Information Technology, 2007, 29(9): 2177-2181. doi: 10.3724/SP.J.1146.2006.00150

Citation:

Jiao Xian-Jun, Xiang Hai-Ge. PP-OFDM with BICM-ID and Postfix Amplitude Optimization[J]. Journal of Electronics & Information Technology, 2007, 29(9): 2177-2181. doi: 10.3724/SP.J.1146.2006.00150

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PP-OFDM with BICM-ID and Postfix Amplitude Optimization

doi: 10.3724/SP.J.1146.2006.00150 cstr: 32379.14.SP.J.1146.2006.00150

Received Date: 2006-02-13
Rev Recd Date: 2006-06-30
Publish Date: 2007-09-19

Abstract

Abstract

A new postfixing scheme for OFDM is proposed, where PP (Pilot Postfix) is inserted in the guard interval after OFDM symbol, and PP-OFDM system is constructed with BICM-ID(Bit-Interleaved Coded Modulation with Iterative Decoding). PP is generated by IFFT to frequency domain pilot symbols in OFDM symbol, and can be combined with those pilots in OFDM symbol at receiver. Channel estimation,equalization and BICM-ID algorithm for PP-OFDM are also proposed. Effective SNR degradation caused by imperfect channel estimation is studied, and a method is proposed to optimize the amplitude of PP. With the optimal PP amplitude, simulations show that PP-OFDM has better channel estimation performance and lower PER (Packet Error Rate) than CP/ZP-OFDM (Cyclic Prefix/Zero Postfix -OFDM).

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References(1)

References

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