Title :
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
fDate :
8/1/1993 12:00:00 AM
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;
Journal_Title :
Vehicular Technology, IEEE Transactions on
