Title :
Combined Selective Mapping and Binary Cyclic Codes for PAPR Reduction in OFDM Systems
Author :
Chen, Houshou ; Liang, Hsinying
Author_Institution :
Nat. Chung Hsing Univ., Taichung
fDate :
10/1/2007 12:00:00 AM
Abstract :
In this paper, we consider reduction of PAPR in OFDM systems with BPSK subcarriers by combining SLM and binary cyclic codes. This combining strategy can be used for both error correction and PAPR reduction. We decompose a binary cyclic code into direct sum of two cyclic subcodes: the correction subcode used for error correction and the scrambling subcode for PAPR reduction. The transmitted OFDM signal is selected that achieves minimum PAPR, from the set of binary cyclic codewords. The received signal can be easily decoded without the need of any side information. Simulations show that the proposed scheme with simplex code as scrambling subcode achieves good PAPR reduction.
Keywords :
OFDM modulation; binary codes; cyclic codes; error correction; error correction codes; BPSK subcarrier; OFDM signal; OFDM system; binary cyclic codeword; correction subcode; cyclic subcode; error correction; orthogonal frequency division multiplexing; scrambling subcode; selective mapping; simplex code; Binary phase shift keying; Block codes; Decoding; Encoding; Error correction; Error correction codes; Frequency division multiplexing; OFDM modulation; Partial transmit sequences; Peak to average power ratio;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2007.060145