A frequency domain equalizer for wlan 802.11g single-carrier transmission mode

Frank H. Hsiao, Terng-Yin Hsu

Research output: Contribution to journalConference article

3 Scopus citations

Abstract

In this paper a frequency domain equalizer is proposed for WLAN 802.11g single-carrier transmission mode. Channel estimation is achieved with modified recursive least square (RLS) algorithm in frequency domain. For channel compensation, OFDM like frequency domain zero-forcing equalization is performed with FFT units and complex divider. In 802.11g single-carrier mode, transmission packets are not equipped with cyclic prefixes so signal overlapping and discarding using sliding windows are maintained at each equalization process to decrease the symbol estimation error caused by circularly de-convoluting a linear channel convolution process. With the equalizer of single-carrier mode implemented in frequency domain many of their computation resources can be shared with 802.11g OFDM equalizer offering a low complexity multimode receiver solution.

Original languageEnglish
Article number1465658
Pages (from-to)4606-4609
Number of pages4
JournalProceedings - IEEE International Symposium on Circuits and Systems
DOIs
StatePublished - 1 Dec 2005
EventIEEE International Symposium on Circuits and Systems 2005, ISCAS 2005 - Kobe, Japan
Duration: 23 May 200526 May 2005

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