Author(s): Rakesh, Dr. Ramesh
Published in: International Journal of Engineering Research & Technology
License: This work is licensed under a Creative Commons Attribution 4.0 International License.
Volume/Issue: Vol. 3 - Issue 5 (May - 2014)
Supporting high mobility will be an important character of the future wireless communication systems. It challenges the channel estimaton technique a lot and there are two tough problems in front of us, they are multipath fading channel and bandwidth efficiency. Orthogonal Frequency Division Multiplexing (OFDM) technique changed the frequency selective multipath fading channels into flat fading channel in frequency domain, which effectively mitigates the effects of multipath propogation and, hence, increases data rate. We summarize and analyse the exciting channel estimation methods in mimoofdm system. In this paper, we propose a new hardware implementation of channel estimation for MIMO-OFDM. Our target is to minimize hardware resource utilization. At first, proper algorithm is chosen in consideration of hardware feature as well as communication theory for fast proto typing. Based on the algorithm, our architecture performs channel estimation by simple calculation logic without redundancy. Theoretical analysis and numerical results show that the new channel estimation scheme can offer a good performance and a high ability to track the time varying channel.
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