Title :
A New Practical MIMO Channel Estimation Technique for IEEE802.16a: Performance Analysis
Author :
Drieberg, Micheal ; Min, Yew Kuan ; Jeoti, Varun
Author_Institution :
Electr. & Electron. Dept., Univ. Teknol. PETRONAS, Tronoh
Abstract :
Both orthogonal frequency division multiplexing (OFDM) and multi-input multi-output (MIMO) are key enabling technologies for future wireless communications systems. For both these technologies to work optimally, the channel between each pair of transmitter and receiver needs to be estimated accurately. In an earlier work, we had proposed a simple channel estimation method for a MIMO-OFDM system based on IEEE802.16a (wireless metropolitan area network (MAN)). The channel estimates were obtained by cyclically rotating the preamble in such a way that the time domain channel impulse response (CIR) from each transmitter can be separated in time within one symbol period. Results show that the overall system BER are nearly as good as the upper bound performance that is obtained with perfect channel state information (CSI) with only 0.5 dB worst case degradation in performance.
Keywords :
MIMO communication; OFDM modulation; WiMax; channel estimation; radio access networks; BER; IEEE802.16a; MIMO channel estimation; MIMO-OFDM system; channel state information; fixed broadband wireless access; multi-input multi-output; orthogonal frequency division multiplexing; symbol period; time domain channel impulse response; wireless communications systems; wireless metropolitan area network; Bit error rate; Channel estimation; MIMO; Metropolitan area networks; OFDM; Performance analysis; Transmitters; Upper bound; Wireless LAN; Wireless communication; Channel estimation; IEEE802.16a; MIMO-OFDM; ST Codes; fixed Broadband Wireless Access;
Conference_Titel :
TENCON 2005 2005 IEEE Region 10
Conference_Location :
Melbourne, Qld.
Print_ISBN :
0-7803-9311-2
Electronic_ISBN :
0-7803-9312-0
DOI :
10.1109/TENCON.2005.300941