Spectral Efficiency of Asynchronous MC-CDMA With Frequency Offset Over Correlated Fading

Author

Ahmed, J. ; Hamdi, Khairi A.

Author_Institution

Dept. of Electr. Eng., COMSATS Inst. of Inf. Technol., Islamabad, Pakistan

Volume

62

Issue

7

fYear

2013

fDate

Sept. 2013

Firstpage

3423

Lastpage

3429

Abstract

Multiple-access interference (MAI) and intercarrier interference (ICI) due to a carrier frequency offset are two major factors that deteriorate the performance of multicarrier code-division multiple access (MC-CDMA) in wireless communications. This paper presents a new mathematical analysis for the spectral efficiency of asynchronous MC-CDMA communication systems over a frequency-selective Rayleigh fading environment. It employs accurate statistical models for MAI and ICI that account for the correlation between adjacent subcarriers to derive a new simple expression. An approximate expression for the spectral efficiency is also provided, which reduces complexity.

Keywords

Rayleigh channels; code division multiple access; intercarrier interference; radiofrequency interference; statistical analysis; ICI; MAI; adjacent subcarriers; asynchronous MC-CDMA communication systems; carrier frequency offset; complexity reduction; correlated fading; frequency offset; frequency-selective Rayleigh fading environment; intercarrier interference; mathematical analysis; multicarrier code-division multiple access; multiple-access interference; spectral efficiency; statistical model; wireless communications; Correlation; Fading; Interference; OFDM; Random variables; Receivers; Signal to noise ratio; Asynchronous multicarrier code-division multiple-access (MC-CDMA); correlated fading; frequency offset; inter-carrier interference; multiple access interference; spectral efficiency; uplink;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2013.2253339

Filename

6482268