Iterative Decoding of Orthogonal Space-Time Coded CPM Systems

Authors:
Shengli Fu;Genyuan Wang;Xiang-Gen Xia
Affiliations:
Department of Electrical and Computer Engineering, University of Delaware, Newark, U.S.A. 19716;Department of Electrical and Computer Engineering, University of Delaware, Newark, U.S.A. 19716;Department of Electrical and Computer Engineering, University of Delaware, Newark, U.S.A. 19716
Venue:
Wireless Personal Communications: An International Journal
Year:
2004

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Abstract

We present an iterative decoding/demodulation technique for an orthogonal space-time coded continuous-phase modulation (OST-CPM) system. A low-complexity soft input and soft output (SISO) demodulator is developed based on the bidirectional soft output Viterbi algorithm (BSOVA) for the multiple antennas CPM systems. By taking advantage of the orthogonal structure, the complexity of extrinsic information extraction can be significantly reduced at each iteration.