40 Mbit/s adaptive MLSE equalizer LSI and its performance in 5 GHz-Band transmission system

Yushi Shirato, Kiyoshi Kobayashi, Satoshi Denno

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The authors have developed a single chip, 40 Mbit/s operation, 3-tap MLSE equalizer LSI. The LSI supports burst operation and is available for both QPSK and π/4-QPSK modulated signals. This paper shows the performance of a 5 GHz-Band 40 Mbit/s experimental system using this equalizer LSI. The main results are as follows; 1) The implicit diversity gain offered by the equalizer is 12 dB at the BER of 10-3. 2) The gain obtained in 2-branch diversity reception is 6 dB at the BER of 10-3. 3) In single branch operation, no error floor is observed when the BER is higher than 10-4. Furthermore, 2-branch diversity reception limits the irreducible bit errors to one tenth that of single branch reception. 4) The DC offset compensator effectively minimizes the degradation introduced by the DC offset caused by the imperfection of the demodulator. 5) The same performance is observed for both modulation schemes. The LSI can be used in wide band wireless applications like indoor wireless LAN systems and wide area wireless local loop systems.

Original languageEnglish
Title of host publicationIEEE VTS 50th Vehicular Technology Conference, VTC 1999-Fall
Pages305-308
Number of pages4
Volume1
Publication statusPublished - 1999
Externally publishedYes
EventIEEE VTS 50th Vehicular Technology Conference, VTC 1999-Fall - Houston, TX, USA
Duration: Sep 19 1999Sep 22 1999

Other

OtherIEEE VTS 50th Vehicular Technology Conference, VTC 1999-Fall
CityHouston, TX, USA
Period9/19/999/22/99

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Shirato, Y., Kobayashi, K., & Denno, S. (1999). 40 Mbit/s adaptive MLSE equalizer LSI and its performance in 5 GHz-Band transmission system. In IEEE VTS 50th Vehicular Technology Conference, VTC 1999-Fall (Vol. 1, pp. 305-308)