Exact error probability for MMSE combining and comparison with maximal ratio combining for digital radio with cochannel interference

Author

Lin, Sheng-Chou ; Chen, Ching-Wen ; Wu, Chi-Wei

Author_Institution

Dept. of Electron. Eng., Fu-Jen Catholic Univ., Taipei, Taiwan

fYear

2009

fDate

8-10 Dec. 2009

Firstpage

1

Lastpage

5

Abstract

The exact performance analysis of MMSE (minimum-mean-square-error) combining for space diversity reception is studied in the presence of a single and multiple cochannel interference (CCI) sources, and compared to maximum-ratio combining (MRC). This paper considers digital cellular mobile radio systems with quadrature amplitude modulation (QAM) transmission and two diversity antennas in flat and quasi-static fading channels. Our analysis accounts for pulse waveform and modulation of the desired signal, as well as cochannel interference (CCI). The phase and symbol timing offsets between the desired signal and CCI, which can result in ISI caused by CCI, are taken into account. The desired signal channel is assumed Rayleigh or nonfading, as well as the CCI sources. The error probability for each fading channel is estimated fast and accurately by using Gauss quadrature rules (GQR) which can approximate the probability density function (pdf) of the ISI-like CCI in each fading channel.

Keywords

Gaussian processes; cellular radio; cochannel interference; diversity reception; error statistics; fading channels; least mean squares methods; mobile radio; probability; quadrature amplitude modulation; Gauss quadrature rules; MMSE; QAM transmission; cochannel interference; digital cellular mobile radio system; diversity antenna; error probability; fading channel; maximal ratio combining technique; minimum-mean-square-error; probability density function; pulse waveform; quadrature amplitude modulation; space diversity reception; Digital communication; Diversity reception; Error probability; Fading; Interchannel interference; Land mobile radio; Performance analysis; Pulse modulation; Quadrature amplitude modulation; Radiofrequency interference; Cochannel interference (CCI); Gauss quadrature rules (GQR); MMSE (minimum-mean-square) combining; Maximum-ratio combining (MRC); Space Diversity;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Communications and Signal Processing, 2009. ICICS 2009. 7th International Conference on

Conference_Location

Macau

Print_ISBN

978-1-4244-4656-8

Electronic_ISBN

978-1-4244-4657-5

Type

conf

DOI

10.1109/ICICS.2009.5397608

Filename

5397608