Title :
Closed-loop STBC for two transmit antenna MIMO systems with 1-bit feedback
Author :
Van Bien Pham ; Weixing Sheng ; Xiaofeng Ma ; Hao Wang
Author_Institution :
Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
The closed-loop multiple-input multiple-output (C-MIMO) systems with feedback channel significantly improve performance of systems. There are many recent researches proposed space time block codes (STBCs) for closed-loop MIMO systems which have number of transmit antennas greater 2. However, to the best of our knowledge, the STBC for closed-loop MIMO systems with 2 transmit antennas is not available. In this paper, we present a STBC rate of one for C-MIMO systems with two transmit antennas. By rotating constellation and coordinate interleaving symbols in codeword, the proposed code also achieves full diversity and linear decoding complexity as Alamouti code. In addition, the proposed code with 1-bit feedback achieves a significant improvement in performance and outperforms open-loop Alamouti code.
Keywords :
MIMO communication; antenna arrays; closed loop systems; linear codes; space-time block codes; transmitting antennas; Alamouti code; closed-loop MIMO systems; closed-loop STBC; coordinate interleaving symbols; feedback channel; linear decoding complexity; multiple-input multiple-output systems; rotating constellation; space time block codes; transmit antennas; two transmit antenna; Block codes; MIMO; Maximum likelihood decoding; Receiving antennas; Transmitting antennas; Wireless communication;
Conference_Titel :
Advanced Technologies for Communications (ATC), 2011 International Conference on
Conference_Location :
Da Nang
Print_ISBN :
978-1-4577-1206-7
DOI :
10.1109/ATC.2011.6027470
