Low complexity down-sampled MMSE (DMMSE) channel estimation for downlink OFDMA IEEE 802.16e system

Author

Galih, Savitri ; Karlina, Riafeni ; Nugroho, Fifin ; Irawan, Ade ; Adiono, Trio ; Kurniawan, Adit

Author_Institution

Sch. of Electron. & Inf., Bandung Inst. of Technol., Bandung, Indonesia

fYear

2009

fDate

27-29 Oct. 2009

Firstpage

273

Lastpage

277

Abstract

In this paper, we present low complexity down-sampled MMSE channel estimation. We reduced MMSE channel estimation complexity by downsampling the MMSE weight matrix. The simulation results show that the bit error rate (BER) performance significantly improved over the least square channel estimation and has comparable BER performance with MMSE channel estimation at low SNR with significant decrease i.e 57% decrease in computational complexity.

Keywords

OFDM modulation; channel estimation; computational complexity; error statistics; frequency division multiple access; least mean squares methods; matrix algebra; MMSE weight matrix; bit error rate; computational complexity; downlink OFDMA IEEE 802.16e system; least square channel estimation; low complexity down-sampled MMSE channel estimation; Bit error rate; Channel estimation; Computational complexity; Computational modeling; Downlink; Informatics; Least squares approximation; OFDM modulation; Transfer functions; WiMAX;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2009 3rd IEEE International Symposium on

Conference_Location

Beijing

Print_ISBN

978-1-4244-4076-4

Type

conf

DOI

10.1109/MAPE.2009.5355916

Filename

5355916