Title :
Block Faded Channel Estimation for Multiuser STBC-OFDM Systems
Author :
Islam, Toufiqul ; Ahmed, Imtiaz ; Mallick, Shankhanaad ; Alam, Fakhrul ; Rahman, Md Saifur
Author_Institution :
Dept. of Electr. & Electron. Eng., Bangladesh Univ. of Eng. & Technol., Dhaka
Abstract :
Accurate channel estimation is necessary to gain the advantage of space time coding for decoding purposes. Most of the previous work on orthogonal frequency division multiplexed (OFDM) channel estimation focused on single user systems. Hence, they are inappropriate in the multiuser communication systems. In this paper, we proposed a novel multiuser channel estimation technique based on simple blocked pilot grid for space time block coded (STBC)-OFDM systems. We simulated the proposed scheme for slowly faded quasi-static channel. LS and MMSE estimator performance for different number of users are also analyzed
Keywords :
OFDM modulation; block codes; channel coding; channel estimation; fading channels; least mean squares methods; multiuser channels; space-time codes; MMSE estimator performance; STBC-OFDM system; faded quasistatic channel; minimum mean squared error; multiuser channel estimation technique; orthogonal frequency division multiplexing; space time block coding; Channel estimation; Decoding; Fading; MIMO; Multiuser channels; OFDM; Receiving antennas; Space technology; Transmitting antennas; Wireless communication;
Conference_Titel :
TENCON 2006. 2006 IEEE Region 10 Conference
Conference_Location :
Hong Kong
Print_ISBN :
1-4244-0548-3
Electronic_ISBN :
1-4244-0549-1
DOI :
10.1109/TENCON.2006.343978
