A Two-Level FH-CDMA Scheme for Wireless Communication Systems over Fading Channels

Author

Wu, Sung-Ming ; Yang, Guu-Chang ; Chang, Cheng-Yuan ; Kwong, Wing C.

Author_Institution

Dept. of Electr. Eng., Nat. Chung Hsing Univ., Taichung, Taiwan

Volume

59

Issue

1

fYear

2011

fDate

1/1/2011 12:00:00 AM

Firstpage

38

Lastpage

44

Abstract

In this paper, we propose a "two-level" frequency-hopping code-division multiple-access (FH-CDMA) scheme for wireless communication systems. The new scheme provides flexibility in the selection of modulation codes and FH patterns. By partitioning the modulation codes, our two-level scheme can be modified to support more possible users without increasing the number of FH patterns. The performance and spectral efficiency (SE) of the scheme are analyzed. Our results show that the partitioned two-level FH-CDMA scheme supports higher data rate and greater SE than Goodman\´s frequency-shift-keying FH-CDMA scheme under some conditions.

Keywords

code division multiple access; fading channels; frequency hop communication; frequency shift keying; modulation coding; spectral analysis; FH-CDMA scheme; fading channels; frequency shift keying; frequency-hopping cod division multiple access; modulation codes; spectral efficiency; wireless communication systems; Fading; Frequency modulation; Interference; Multiaccess communication; Receivers; Time frequency analysis; Code division multiple access; code modulation; frequency hopping; spectral efficiency;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2010.111710.090157

Filename

5648743