Block differentially encoded OFDM with maximum multipath diversity

Authors:
Zhiqiang Liu;G. B. Giannakis
Affiliations:
Dept. of Electr. & Comput. Eng., Univ. of Iowa, Iowa City, IA, USA;-
Venue:
IEEE Transactions on Wireless Communications
Year:
2003

Citing 0
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Abstract

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.