ABSTRACT The conventional orthogonal space-time block code (OSTBC) with limited feedback has fixed p-1 feedback bits for the specific ntp transmit antennas. A new partial feedback based OSTBC which provides flexible feedback bits is proposed in this paper. The proposed scheme inherits the properties of having a simple decoder and the full diversity of OSTBC, moreover, preserves full data rate. Simulation results show that for ntp transmit antennas, the proposed scheme has the similar performance with the conventional one by using p-1 feedback bits, whereas has the better performance with more feedback bits.
Cite this paper
Wang, L. and Chen, Z. (2013) Partial Feedback Based Orthogonal Space-Time Block Coding With Flexible Feedback Bits. Communications and Network, 5, 127-131. doi: 10.4236/cn.2013.53B2024.
 V. Tarokh, H. Jafarkhani and A. R. Calderbank, “Space-time Block Codes from Orthogonal Designs,” IEEE Transactions on Information Theory, Vol. 45, No. 5, 1999, pp. 1456-1467. doi:10.1109/18.771146
 S. M. Alamouti, “A Simple Transmitter Diversity Scheme for Wireless Communications,” IEEE Journal on Selected Areas in Communications, Vol. 16, No. 8, 1998, pp. 1451-1458. doi:10.1109/49.730453
 S. Sandhu and A. J. Paulraj, “Space-time Block Codes: A Capacity Perspective,” IEEE, Communications Letters, Vol. 4, No. 12, 2000, pp. 384-386. doi:10.1109/4234.898716
 H. Jafarkhani, “A Quasi-orthogonal Space-time Block Code,” IEEE Transactions on Communications, Vol. 49, No. 1, 2001, pp. 1-4. doi:10.1109/26.898239
 W. Su and X. G. Xia, “Signal Constellations for Quasi- orthogonal Space-time Block Codes with Full Diversity,” IEEE Transactions on Information Theory, Vol. 50, 2004, pp. 2331-2347. doi:10.1109/TIT.2004.834740
 X. L. Ma and G. B. Giannakis, “Full-diversity Full-rate Complex-field Space-time Coding,” IEEE Transactions on Signal Processing, Vol. 51, No. 11, 2003, pp. 2917-2930. doi:10.1109/TSP.2003.818206
 J. Akhtar and D. Gesbert, “Extending Orthogonal Block Codes with Partial Feedback,” IEEE Transactions on Wireless Communications, Vol. 3, No. 6, 2004, pp. 1959-1962. doi:10.1109/TWC.2004.837469
 A. Sezgin, G. Altay and A. Paulraj, “Generalized Partial Feedback Based Orthogonal Space-time Block Coding,” IEEE Transactions on Wireless Communications, Vol. 8, No. 6, 2009, pp. 2771-2775. doi:10.1109/TWC.2009.080352
 B. Hassibi and B. M. Hochwald, “High-rate Codes That Are Linear in Space and Time,” IEEE Transactions on Information Theory, Vol. 48, No. 7, 2002, pp. 1804-1824. doi:10.1109/TIT.2002.1013127
 M. K. Simon and M. S. Alouini, “Digital Communication over Fading Channels,” John Wiley & Sons Inc., 2000.
 G. Ganeon and P. Stoica, “Space-time Block Codes: A Maximum SNR Approach,” IEEE Transactions Informations Theory, Vol. 47, No. 4, 2001, pp. 1650-1656. doi:10.1109/18.923754