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Block differentially encoded OFDM with maximum multipath diversity

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2 Author(s)
Liu, Zhiqiang ; Dept. of Electr. & Comput. Eng., Univ. of Iowa, Iowa City, IA, USA ; Giannakis, G.B.

This paper proposes a novel block differentially encoded orthogonal frequency-division multiplexing for multicarrier transmissions over frequency-selective fading channels. Choosing appropriate system parameters, we divide the set of correlated subchannels into subsets of independent subchannels. Within each subset, differential unitary space-time modulation is performed by treating each subchannel as a transmit antenna. In addition to low complexity, the proposed system enjoys maximum multipath diversity and high coding advantages. Analytic evaluation and corroborating simulations reveal its performance merits.

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Wireless Communications, IEEE Transactions on  (Volume:2 ,  Issue: 3 )