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A Channel Independent Precoding for MIMO-OFDM Systems with Insufficient Cyclic Prefix

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2 Author(s)
Yuansheng Jin ; Dept. of Electr. & Comput. Eng., Univ. of Delaware, Newark, DE, USA ; Xia, Xiang-Gen

In this paper, a channel independent precoding for MIMO-OFDM systems of nt transmit and nr receive antennas with insufficient cyclic prefix (CP) is proposed. By empolying the interference alignment (IA) idea, we show that our proposed channel independent precoding scheme can eliminate the interblock interference (IBI) caused by the insufficient CP with a higher bandwidth efficiency than the conventional zero-padding or adding a sufficient CP when nr ≤ nt. It is also shown that when nr >; nt, the IBI can be eliminated without any zero-padding or adding CP or precoding when the OFDM block length is not small.

Published in:

Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE

Date of Conference:

5-9 Dec. 2011