Complexity evaluation for the implementation of a pre-FFT equalizer in an OFDM receiver

Author

Armour, S. ; Nix, A. ; Bull, D.

Author_Institution

Centre for Commun. Res., Bristol Univ., UK

fYear

2000

fDate

13-15 June 2000

Firstpage

16

Lastpage

17

Abstract

A pre-FFT equalizer (PFE) has been shown to offer a significant throughput efficiency improvement when applied to an OFDM receiver. The required computational complexity to implement such an equalizer is evaluated assuming the LMS adaptation algorithm. The paper concludes by discussing the potential efficiency and complexity trade-offs that can be achieved when applying this technology to standards such as Hiperlan/2, IEEE P802.11a and DVB-T.

Keywords

Adaptive equalizers; Computational complexity; Digital video broadcasting; Fast Fourier transforms; IEEE standards; Least mean squares methods; OFDM modulation; Radio receivers; Telecommunication standards; Television standards; Wireless LAN; DVB-T; Hiperlan/2; IEEE P802.11a; LMS adaptation algorithm; LMS algorithm; LMS analysis; OFDM receiver; adaptive equalizer; complexity evaluation; computational complexity; pre-FFT equalizer; radio communications standards; standards; throughput efficiency; Clocks; Computational complexity; Costs; Decision feedback equalizers; Digital video broadcasting; Filters; Least squares approximation; OFDM; Performance analysis; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, 2000. ICCE. 2000 Digest of Technical Papers. International Conference on

Conference_Location

Los Angles, CA, USA

Print_ISBN

0-7803-6301-9

Type

conf

DOI

10.1109/ICCE.2000.854476

Filename

854476