A new generalized complex orthogonal space-time block codes
Tóm tắt
Recent research challenges in the wireless communication include the usage of diversity and efficient coding to improve data transmission quality and spectral efficiency. Space diversity uses multiple transmitting and/or receiving antennas to create independent fading channels without penalty in bandwidth efficiency. Space-time block coding is an encoding scheme for communication over Rayleigh fading channels using multiple transmitting antennas. Space-time block codes from complex orthogonal designs exist only for two transmitting antennas. This paper generalizes a new complex orthogonal space-time block code for four transmitting antennas, whose decoding complexity is very low. Simulations show that the generalized complex orthogonal space-time block code has low bit error rate, full rate and possibly large diversity.
Tài liệu tham khảo
Winters J H, Salz J, Gitlin R D. The impact of antenna diversity on the capacity of wireless communication systems [J]. IEEE Transactions on Communications, 1994,42 (234): 1740–1751
Chiurtu N, Rimoldi B, Telatar E. On the capacity of multiantenna Gaussian channels[A]. ISIT 2001 [C]. Washington, DC, June 2001.
Vahid Tarokh, Nambi Seshadri, Calderbank A R. Space-time codes for high daa rate wireless communication: performance criterion and code construction[J]. IEEE Transactions on Information Theory, March 1998, 44(2): 744–765.
Su Weifeng, Xia Xianggen. Two generalized complex orthogonal space-time block codes of rates 7/11 and 3/5 for 5 and 6 transmit antennas[J]. IEEE Transaction on Information Theory, January 2003, 49(1): 313–316.
Alamouti S M. A simple transmitter diversity scheme for wireless communications [J]. IEEE J. Select. Areas Commun., October 1998, 16(8): 1451–1458.
Vahid Tarokh, Hamid Jafarkhani, Calderbank A R. Space-time block codes from orthogonal designs [J]. IEEE Transactions on Information Theory, July 1999, 45(5): 1456–1467.
Tirkonen O, Boaru A, Hottinen A. Minimal non-orthogonality rate one space-time block code for 3 + Tx antennas [A].ISSKTA 2000[C]. September 2000, 429–432.