Performance of multi-level QAM with post-detection maximal ratio combining space diversity for digital land-mobile radio communications

Author

Sunaga, Terumi ; Sampei, Seiichi

Author_Institution

Dept. of Electr. Eng., Chuo Univ., Tokyo, Japan

Volume

42

Issue

3

fYear

1993

fDate

8/1/1993 12:00:00 AM

Firstpage

294

Lastpage

301

Abstract

A new type of post-detection maximal ratio combining for space diversity receivers in digital land-mobile communications is proposed. The combining scheme is designed for multilevel quadrature amplitude modulation (QAM) and employs a pilot-symbol-aided fading estimator. It is realized at baseband using a digital signal processing (DSP) technique to simplify the receiver hardware. Computer simulation and laboratory experiments confirm that the proposed diversity scheme achieves a performance very close to that of ideal maximal ratio combining

Keywords

amplitude modulation; digital radio systems; diversity reception; mobile radio systems; 16 QAM; 256 QAM; 64 QAM; QAM; digital land-mobile radio communications; digital signal processing; multilevel quadrature amplitude modulation; pilot-symbol-aided fading estimator; post-detection maximal ratio combining; space diversity receivers; Computer simulation; Diversity methods; Diversity reception; Fading; Interchannel interference; Laboratories; Quadrature amplitude modulation; Rayleigh channels; Receivers; Space technology;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.231881

Filename

231881