Two constructions of 16-QAM Golay complementary sequences

Author

Chong, Chan Vee ; Tarokh, Vahid

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA

fYear

2002

fDate

2002

Firstpage

240

Abstract

One of the major issues in deploying OFDM is the high peak to mean envelope power ratio (PMEPR) of uncoded OFDM signals. An important approach to PMEPR reduction is the use of Golay (1961) complementary sequences for OFDM transmission. Davis and Jedwab (see IEEE Trans. Inform. Theory, vol.45, no.7, p.2397-2417, 1999) developed a powerful theory which yields 2^b-PSK Golay sequences as unions of cosets of the classical Reed-Muller codes and new generalizations of them. Given the practical applications of 2^b -PSK Golay sequences and that QAM sequences are widely used in OFDM, it is natural to ask of 16-QAM (and higher) Golay complementary sequences. We present two constructions of 16-QAM Golay complementary sequences from 4-QAM complementary sequences. These sequences can be applied as pilot sequences in future OFDM systems.

Keywords

Golay codes; OFDM modulation; Reed-Muller codes; quadrature amplitude modulation; sequences; 16-QAM Golay complementary sequences; 4-QAM complementary sequences; OFDM transmission; PMEPR; PSK Golay sequences; Reed-Muller codes; peak to mean envelope power ratio; pilot sequences; uncoded OFDM signals; Boolean functions; Notice of Violation; OFDM modulation; Power control; Quadrature phase shift keying;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory, 2002. Proceedings. 2002 IEEE International Symposium on

Print_ISBN

0-7803-7501-7

Type

conf

DOI

10.1109/ISIT.2002.1023512

Filename

1023512