Wideband burst-by-burst adaptive modulation with turbo equalization and iterative channel estimation

Author

Wong, C.H. ; Yeap, B.L. ; Hanzo, L.

Author_Institution

Dept. of Electron. & Comput. Sci., Southampton Univ., UK

Volume

3

fYear

2000

fDate

2000

Firstpage

2044

Abstract

The performance of adaptive modulation-applied in conjunction with turbo equalization (TE)-is characterized in a noise limited environment over a slowly varying wideband multi-path Rayleigh fading channel. The iterative structure of the turbo equalizer was also exploited in order to invoke an iterative least mean square (LMS) channel estimator. Finally, the throughput performance of the adaptive modulation scheme was compared to that of its constituent modulation modes, where a gain of 1.5 dB to 1.7 dB was recorded

Keywords

Rayleigh channels; adaptive modulation; equalisers; error statistics; iterative methods; least mean squares methods; modulation coding; multipath channels; parameter estimation; quadrature amplitude modulation; turbo codes; 16QAM; 4QAM; AQAM; BER; ISI; Rayleigh fading channel; adaptive quadrature amplitude modulation; channel impulse response; coded BPSK; gain; intersymbol interference; iterative LMS channel estimator; iterative channel estimation; iterative structure; least mean square channel estimator; modulation mode switching; noise limited environment; slowly varying wideband multipath fading; throughput performance; turbo equalization; wideband burst-by-burst adaptive modulation; Adaptive equalizers; Bit error rate; Channel estimation; Convolution; Convolutional codes; Intersymbol interference; Iterative decoding; Quadrature amplitude modulation; Wideband; Working environment noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st

Conference_Location

Tokyo

ISSN

1090-3038

Print_ISBN

0-7803-5718-3

Type

conf

DOI

10.1109/VETECS.2000.851631

Filename

851631