A Baseband Transceiver for IEEE 802.16 OFDMA Downlink Communications

Author

Jung-Mao Lin ; Hsi-Pin Ma

Author_Institution

Nat. Tsing Hua Univ., Hsinchu

fYear

2006

Firstpage

1

Lastpage

4

Abstract

A baseband transceiver for IEEE 802.16-2004 OFDMA downlink is proposed. The proposed receiver consists of carrier frequency offset (CFO)/sampling frequency offset (SFO) estimation/compensation, channel estimation/equalization, and sample add/drop function for symbol timing synchronization. A 5.8 GHz center frequency with 10 MHz channel bandwidth is chosen. Both first/second order statistics of preamble and pilot energy detection result in low complexity but accurate enough integer CFO estimations. Residual CFO (RCFO) and SFO estimation is based on least-square (LS) algorithm with moving average on successive symbol phase tracking in frequency domain to reduce noise. The performance of the proposed receiver approaches the ideal one under the simulation scenario of Stanford University Interim (SUI) channel model 4.

Keywords

OFDM modulation; WiMax; channel estimation; frequency estimation; frequency-domain analysis; noise; statistical analysis; transceivers; IEEE 802.16-2004 OFDMA downlink communications; Stanford University Interim channel model 4; baseband transceiver; carrier frequency offset compensation; carrier frequency offset estimation; channel equalization; channel estimation; first order statistics; frequency domain; least-square algorithm; noise reduction; pilot energy detection; sampling frequency offset compensation; sampling frequency offset estimation; second order statistics; symbol phase tracking; symbol timing synchronization; Bandwidth; Baseband; Channel estimation; Downlink; Frequency estimation; Frequency synchronization; Sampling methods; Statistics; Timing; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Sarnoff Symposium, 2006 IEEE

Conference_Location

Princeton, NJ

Print_ISBN

978-1-4244-0002-7

Type

conf

DOI

10.1109/SARNOF.2006.4534753

Filename

4534753