Frequency Domain MMSE Equalization with Moving FFT for MBOK DS-UWB System

Author

Shin-Woo Kang ; Se-Bin Im ; Hyung-Jin Choi

Author_Institution

Sch. of Inf. & Commun. Eng., Sung Kyun Kwan Univ.

fYear

2006

fDate

Sept. 29 2006-Oct. 1 2006

Firstpage

286

Lastpage

290

Abstract

In this paper, we propose a frequency domain (FD) MMSE equalizer for M-ary bi-orthogonal keying direct sequence UWB (MBOK DS-UWB) systems considered as a PHY proposal for high-speed wireless communication in IEEE 802.15.3a. The conventional FD MMSE equalization scheme has a structural limit due to insertion of the cyclic prefix (CP) in all transmit packets, but the proposed scheme is able to equalize the channel effect without CP. In order to overcome channel estimation error by multipath delay, we introduce a moving FFT and a moving average scheme. Compared with the traditional time-domain (TD) MMSE-RAKE receiver, the proposed FD MMSE equalizer has a better BER performance and we demonstrate this result by computer simulation

Keywords

channel estimation; error statistics; fast Fourier transforms; frequency-domain analysis; least mean squares methods; multipath channels; personal area networks; radio receivers; spread spectrum communication; time-domain analysis; ultra wideband communication; FFT; IEEE 802.15.3a; M-ary biorthogonal keying direct sequence UWB systems; MBOK DS-UWB system; channel estimation error; computer simulation; cyclic prefix; equalization scheme; frequency domain MMSE equalization; high-speed wireless communication; moving average scheme; multipath delay; time-domain MMSE-RAKE receiver; Channel estimation; Computer errors; Delay effects; Delay estimation; Equalizers; Frequency domain analysis; Physical layer; Proposals; Time domain analysis; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Software in Telecommunications and Computer Networks, 2006. SoftCOM 2006. International Conference on

Conference_Location

Split

Print_ISBN

953-6114-90-9

Type

conf

DOI

10.1109/SOFTCOM.2006.329767

Filename

4129921