BER performance analysis of a direct conversion receiver

Author

Lindoff, Bengt ; Malm, Peter

Author_Institution

Res. Dept., Ericsson Mobile Platforms AB, Lund, Sweden

Volume

50

Issue

5

fYear

2002

fDate

5/1/2002 12:00:00 AM

Firstpage

856

Lastpage

865

Abstract

Direct conversion receivers are increasingly popular for use in mobile terminals. This is due to advantages over other architectures such as heterodyne receivers in terms of cost, electrical current, and physical size. However, a direct conversion receiver often generates a DC-offset that has to be taken care of either by suppressing the DC-offset in the radio-frequency part of the receiver, or by taking care of it during baseband processing. A theoretical analysis of the bit error rate (BER) performance in a direct conversion receiver with different levels of DC-offset suppression is presented. Explicit results are presented on how the BER depends on the signal-to-noise ratio (SNR), the signal-to-DC-level, and the choice of pilot symbols both with M-QAM and M-PSK in a slow, flat Rayleigh fading channel. A design rule, which applies to the design of DC-compensation in direct conversion receivers, is also presented

Keywords

Rayleigh channels; cellular radio; error statistics; phase shift keying; quadrature amplitude modulation; radio receivers; BER performance; DC-offset suppression; M-PSK; M-QAM; SNR; baseband processing; bit error rate; cellular communication; cost; design rule; direct conversion receiver; electrical current; flat Rayleigh fading channel; heterodyne receivers; mobile terminals; pilot symbols; signal-to-DC-level; signal-to-noise ratio; slow fading channel; Baseband; Bit error rate; Costs; Error analysis; Fading; Performance analysis; Production; Radio frequency; Receivers; Signal to noise ratio;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2002.1006566

Filename

1006566