Low Complexity Data Decoding for SLM-Based OFDM Systems without Side Information

Author

Park, Jihan ; Hong, Eonpyo ; Har, Dongsoo

Author_Institution

Dept. of Info. & Comm., Gwangju Inst. of Sci. & Technol., Gwangju, South Korea

Volume

15

Issue

6

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

611

Lastpage

613

Abstract

Selected mapping (SLM) scheme is a well-known technique for peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems. To recover data at receiver, the SLM scheme requires transmission of the selected phase sequence index, e.g., side information (SI). In this letter, a new pilot phase sequence enabling data recovery without SI and a low complexity decoding scheme are proposed. The BER performance of the proposed scheme is approximately the same in comparison with the SLM scheme with SI and considerably better than that of the Maximum Likelihood (ML) decoding scheme. In addition, the computational complexity of the proposed decoding scheme is much lower, as compared to the ML decoding scheme.

Keywords

OFDM modulation; error statistics; maximum likelihood decoding; radio receivers; BER; SLM-based OFDM system; bit error rate; computational complexity; data recovery; low complexity data decoding; maximum likelihood decoding; orthogonal frequency division multiplexing; peak-to-average power ratio; phase sequence index; pilot phase sequence; selected mapping scheme; Bit error rate; Computational complexity; Maximum likelihood decoding; Peak to average power ratio; Silicon; PAPR; SLM; phase sequence; side information;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2011.041411.101946

Filename

5755142