Performance of uplink and downlink MC-CDMA equalizers in frequency selective Nakagami fading channels

Author

Abdel-Hafez, Mohammad ; Li, Zexian ; Latva-aho, Matti

Author_Institution

Dept. of Electr. Eng., United Arab Emirates Univ., Al-Ain, United Arab Emirates

Volume

2

fYear

2002

fDate

2-5 Sept. 2002

Firstpage

385

Abstract

The average bit error rate (BER) performance of the uplink and downlink of a multicarrier code division multiple access (MC-CDMA) system using coherent maximal-ratio combining (MRC) and equal gain combining (EGC) receivers for a frequency selective Nakagami fading channel are studied. The analysis assumes that different subcarriers experience independent fading channels, but not necessary identically distributed. Generalized BER expressions for both uplink and downlink with MRC and EGC receivers are derived. From the derived results, however, the performance of EGC is found to outperform MRC in the downlink. On the other hand, MRC for the uplink is found to be the optimal compared with EGC.

Keywords

code division multiple access; equalisers; error statistics; fading channels; mobile radio; radio receivers; BER; MC-CDMA equalizers; MRC; Nakagami fading channels; bit error rate; equal gain combining receivers; frequency selective fading channels; maximal-ratio combining receivers; mobile radio networks; multicarrier code division multiple access; Bit error rate; Diversity reception; Downlink; Equalizers; Fading; Frequency conversion; Multicarrier code division multiple access; Performance gain;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on

Print_ISBN

0-7803-7627-7

Type

conf

DOI

10.1109/ISSSTA.2002.1048569

Filename

1048569