A novel adaptive equalization and cancellation algorithm for direct conversion receivers

Author

Zheng, Yuanjin ; Cao, Mingzheng ; Garg, H.K.

Author_Institution

ICS Labs., Inst. of Microelectron., Singapore, Singapore

Volume

1

fYear

2003

fDate

15-18 Dec. 2003

Firstpage

631

Abstract

A novel technique is proposed in this paper to remove IM2, DC offset, ISI and AWGN simultaneously in a direct conversion receiver by using an adaptive complex filter. DC offset is modeled as a random tap, and IM2 signals are treated as variable real DC values both in I/Q channels separately. Then we can remove DC offset and IM2 simultaneously with only one complex tap. Furthermore, a decision feedback equalizer is employed to cancel the channel ISI. Simulation results are provided which verify the superior performance of the proposed method.

Keywords

AWGN; adaptive equalisers; adaptive filters; decision feedback equalisers; feedback; intermodulation distortion; intersymbol interference; receivers; telecommunication channels; AWGN; ISI; adaptive complex filter; adaptive equalization; additive white Gaussian noise; cancellation algorithm; decision feedback equalizer; direct conversion receivers; intermodulation distortion; random tap; AWGN; Adaptive equalizers; Adaptive filters; Circuits; Decision feedback equalizers; Distortion; Intersymbol interference; Microelectronics; RF signals; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Communications and Signal Processing, 2003 and Fourth Pacific Rim Conference on Multimedia. Proceedings of the 2003 Joint Conference of the Fourth International Conference on

Print_ISBN

0-7803-8185-8

Type

conf

DOI

10.1109/ICICS.2003.1292530

Filename

1292530