A computationally efficient algorithm for code decision in CCK based high data rate wireless communications

Author

Batabyal, Subhendu ; Sarmah, S.J.

Author_Institution

Hellosoft Pvt. Ltd., Hyderabad, India

fYear

2002

fDate

15-17 Dec. 2002

Firstpage

143

Lastpage

146

Abstract

A computationally efficient algorithm for decoding an 8-chip complementary code sequence using fast Walsh transform (FWT) technique is presented. The reduction in computation is achieved by exploiting the redundant nature of a set of 4 outputs at the 3/sup rd/ stage of FWT computed from the same pair of 2/sup nd/ stage outputs, the redundancy being with respect to their squared magnitudes. The advantages of the algorithm are discussed with respect to a hardware implementation.

Keywords

codes; decoding; field programmable gate arrays; sequences; transforms; wireless LAN; 8-chip complementary code sequence; CCK based high data rate wireless communications; FPGA implementation; code decision; complementary code keying; computational complexity; computationally efficient algorithm; decoding; fast Walsh transform; hardware implementation; modified algorithm; redundancy; wireless LAN; Bit rate; Code standards; Computational complexity; Correlators; Decoding; Demodulation; Hardware; Modulation coding; Wireless LAN; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal Wireless Communications, 2002 IEEE International Conference on

Conference_Location

New Delhi, India

Print_ISBN

0-7803-7569-6

Type

conf

DOI

10.1109/ICPWC.2002.1177264

Filename

1177264