An Adaptive Modulation Scheme With Switched Diversity for Rayleigh Fading Channels

Author

Park, Jinkyu ; Lim, Chang Heon

Author_Institution

Dept. of Electron. Eng., Pukyong Nat. Univ., Busan

fYear

2006

fDate

Aug. 2006

Firstpage

1

Lastpage

4

Abstract

We present an application of a switched antenna diversity to a conventional adaptive modulation system, derive its optimal antenna switching threshold for maximizing the average transmission bit rate and analyze its performance in terms of the spectral efficiency and outage probability. The performance analysis shows that the proposed scheme with two receiver antennas achieves an SNR gain of about 2 dB over the adaptive modulation scheme with a single antenna and suffers from a small SNR loss of 0.5 dB compared with the selection diversity based adaptive modulation system when the average number of bits per symbol is targeted to be 2

Keywords

Rayleigh channels; adaptive modulation; diversity reception; probability; receiving antennas; spectral analysis; Rayleigh fading channels; adaptive modulation scheme; outage probability; performance analysis; receiver antenna; spectral efficiency; switched antenna diversity; Adaptive arrays; Adaptive systems; Bit rate; Fading; Multimedia communication; Performance analysis; Performance gain; Receiving antennas; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2006. APCC '06. Asia-Pacific Conference on

Conference_Location

Busan

Print_ISBN

1-4244-0574-2

Electronic_ISBN

1-4244-0574-2

Type

conf

DOI

10.1109/APCC.2006.255856

Filename

4023161