A high speed complex adaptive filter for an asymmetric wireless LAN using a new quantized polynomial representation

Author

Garg, A. ; Steiner, I. ; Jullien, G.A. ; Haslett, J.W. ; McGibney, G.H.

Author_Institution

ATIPS Lab., Calgary, Alta., Canada

Volume

2

fYear

2003

fDate

25-28 May 2003

Abstract

This paper introduces a new number representation, the Quantized Polynomial Representation (QPR), which is used for building FIR filters where some quantization errors can be tolerated. The technique is based on the previously published Modulus Replication Residue Number System (MRRNS) but considerable savings are possible if polynomial quantization can be tolerated. The QPR can be used as a vehicle for Quadratic Residue Number System (QRNS) mapping of complex data, and the main computational architecture can be built with independent finite ring computational channels. We demonstrate this new technique on an asymmetrical Gigabit wireless LAN where the adaptive filter computes with complex arithmetic. We demonstrate area savings of up to 28% and power savings of up to 50%.

Keywords

FIR filters; adaptive filters; polynomials; quantisation (signal); residue number systems; wireless LAN; FIR filter; Modulus Replication Residue Number System; Quadratic Residue Number System; Quantized Polynomial Representation; adaptive filter; asymmetrical wireless LAN; computational architecture; finite ring; high-speed complex arithmetic; polynomial quantization error; Adaptive filters; Arithmetic; Base stations; Finite impulse response filter; Matched filters; Polynomials; Quantization; Radio frequency; Vehicles; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205918

Filename

1205918