Simplified channel estimation for OFDM systems with multiple transmit antennas
Top Cited Papers
- 7 August 2002
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Wireless Communications
- Vol. 1 (1), 67-75
- https://doi.org/10.1109/7693.975446
Abstract
Multiple transmit-and-receive antennas can be used in orthogonal frequency division multiplexing (OFDM) systems to improve communication quality and capacity. In this paper, we present two techniques to improve the performance and reduce the complexity of channel parameter estimation: optimum training-sequence design and simplified channel estimation. The optimal training sequences not only simplify the initial channel estimation, but also attain the best estimation performance. The simplified channel estimation significantly reduces the complexity of the channel estimation at the expense of a negligible performance degradation. The effectiveness of the new techniques is demonstrated through the simulation of an OFDM system with two-transmit and two-receive antennas. The space-time coding with 240 information bits per codeword is used for transmit diversity. From the simulation, the required signal-to-noise ratio is only about 9 dB for a 10% word error rate for a channel with the typical urban- or hilly-terrain delay profile and a 40-Hz Doppler frequency.Keywords
This publication has 12 references indexed in Scilit:
- Clustered OFDM with transmitter diversity and codingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Space-time coded OFDM for high data-rate wireless communication over wideband channelsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Two-dimensional pilot-symbol-aided channel estimation by Wiener filteringPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Pilot-symbol-aided channel estimation for OFDM in wireless systemsIEEE Transactions on Vehicular Technology, 2000
- Transmitter diversity for OFDM systems and its impact on high-rate data wireless networksIEEE Journal on Selected Areas in Communications, 1999
- Channel estimation for OFDM systems with transmitter diversity in mobile wireless channelsIEEE Journal on Selected Areas in Communications, 1999
- Adaptive antenna arrays for OFDM systems with cochannel interferenceIEEE Transactions on Communications, 1999
- OFDM channel estimation by singular value decompositionIEEE Transactions on Communications, 1998
- Space-time codes for high data rate wireless communication: performance criterion and code constructionIEEE Transactions on Information Theory, 1998
- CD3-OFDM: a novel demodulation scheme for fixed and mobile receiversIEEE Transactions on Communications, 1996