An Efficient Multi-Mode Channel Tracking Scheme under Different Velocities in OFDM Systems

@inproceedings{citeulike:2709648, abstract = {In this paper an efficient channel estimation algorithm under different mobile velocities in orthogonal frequency division multiplexing (OFDM) systems is considered. Conventional channel estimation algorithms track adaptively time-varying channels using high performance approaches. However, the power consumption for these algorithms are usually tremendous. On the other hand, users usually move with low speeds in most cases and they do not require such a complicated channel tracker. In view of this we classify the moving speeds into three modes. We then propose a multi-mode channel tracking scheme with different complexities and tracking capabilities. A novel inverse mean-square error (IMSE) velocity metric estimator is also provided along with a mode selection procedure to detect the proper tracking mode. Simulation results show that under the OFDMA mode of the IEEE 802.16e-2005 standard, the proposed algorithm can track the velocity variation very well and perform channel estimation using the most efficient tracking mode. The power consumption is thus decreased significantly without degrading the system performance.}, author = {Hsieh, Yu-Tao and Ting, Pang-An }, booktitle = {Computer Communications and Networks, 2007. ICCCN 2007. Proceedings of 16th International Conference on}, citeulike-article-id = {2709648}, doi = {10.1109/ICCCN.2007.4317930}, journal = {Computer Communications and Networks, 2007. ICCCN 2007. Proceedings of 16th International Conference on}, keywords = {channel, estimation, mobile, ofdm}, pages = {888--893}, posted-at = {2008-04-23 18:54:04}, priority = {2}, title = {An Efficient Multi-Mode Channel Tracking Scheme under Different Velocities in OFDM Systems}, url = {http://dx.doi.org/10.1109/ICCCN.2007.4317930}, year = {2007} }

TY - CONF ID - citeulike:2709648 L3 - citeulike-article-id:2709648 TI - An Efficient Multi-Mode Channel Tracking Scheme under Different Velocities in OFDM Systems T2 - Computer Communications and Networks, 2007. ICCCN 2007. Proceedings of 16th International Conference on JF - Computer Communications and Networks, 2007. ICCCN 2007. Proceedings of 16th International Conference on SP - 888 EP - 893 N2 - In this paper an efficient channel estimation algorithm under different mobile velocities in orthogonal frequency division multiplexing (OFDM) systems is considered. Conventional channel estimation algorithms track adaptively time-varying channels using high performance approaches. However, the power consumption for these algorithms are usually tremendous. On the other hand, users usually move with low speeds in most cases and they do not require such a complicated channel tracker. In view of this we classify the moving speeds into three modes. We then propose a multi-mode channel tracking scheme with different complexities and tracking capabilities. A novel inverse mean-square error (IMSE) velocity metric estimator is also provided along with a mode selection procedure to detect the proper tracking mode. Simulation results show that under the OFDMA mode of the IEEE 802.16e-2005 standard, the proposed algorithm can track the velocity variation very well and perform channel estimation using the most efficient tracking mode. The power consumption is thus decreased significantly without degrading the system performance. KW - channel KW - estimation KW - mobile KW - ofdm AU - Hsieh, Yu-Tao AU - Ting, Pang-An PY - 2007/// UR - http://dx.doi.org/10.1109/ICCCN.2007.4317930 ER -