Block coded modulation for the reduction of the peak to average power ratio in OFDM systems

Author

Fan, Pingyi ; Xia, Kiang-Gen

Author_Institution

Dept. of Electr. & Comput. Eng., Delaware Univ., Newark, DE, USA

Volume

45

Issue

4

fYear

1999

fDate

11/1/1999 12:00:00 AM

Firstpage

1025

Lastpage

1029

Abstract

We propose a block coded modulation (BCM) technique to reduce the peak to average power ratio (PAPR) in OFDM systems. In the proposed technique, binary blocks are mapped to M-ary blocks and M-ary blocks of small sizes with low PAPR are selected. Large size M-ary blocks with low PAPR are constructed by using the selected small size M-ary blocks. Similar to trellis coded modulation, with this technique variable rates ranging from 1 to a rate much higher than 1 of BCM can tie obtained upon different requirements of the random error correction capability in the system, given that the PAPR is below a fixed value. The PAPR gain is defined by comparing with the uncoded OFDM system. Optimal coding gain for the BCM given a PAPR gain is also obtained in various cases.

Keywords

OFDM modulation; block codes; error correction codes; modulation coding; quadrature phase shift keying; M-ary blocks; OFDM systems; QPSK; binary blocks; block coded modulation; optimal coding gain; peak to average power ratio reduction; random error correction; trellis coded modulation; uncoded OFDM system; variable rates; Casting; Error correction codes; Intersymbol interference; Modulation coding; OFDM modulation; Peak to average power ratio;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.809178

Filename

809178