TY - GEN
T1 - Overlapped alamouti codes
AU - Shang, Yue
AU - Xia, Xiang Gen
PY - 2007
Y1 - 2007
N2 - In most of the existing space-time code designs, achieving full diversity is based on maximum-likelihood (ML) decoding at the receiver that is usually computationally expensive and may not have soft outputs. In this paper, we propose a novel family of space-time block codes (STBC) that achieves full diversity with a linear receiver, specifically, zero-forcing (ZF) or minimum mean square error (MMSE) receiver. Our newly proposed STBC are constructed by overlapping the 2 × 2 Alamouti code and hence named overlapped Alamouti codes. The new codes are close to orthogonal while their symbol rates can approach 1 for any number of transmit antennas. Simulation results show that overlapped Alamouti codes outperform orthogonal STBC (OSTBC) when the number of transmit antennas is above 4.
AB - In most of the existing space-time code designs, achieving full diversity is based on maximum-likelihood (ML) decoding at the receiver that is usually computationally expensive and may not have soft outputs. In this paper, we propose a novel family of space-time block codes (STBC) that achieves full diversity with a linear receiver, specifically, zero-forcing (ZF) or minimum mean square error (MMSE) receiver. Our newly proposed STBC are constructed by overlapping the 2 × 2 Alamouti code and hence named overlapped Alamouti codes. The new codes are close to orthogonal while their symbol rates can approach 1 for any number of transmit antennas. Simulation results show that overlapped Alamouti codes outperform orthogonal STBC (OSTBC) when the number of transmit antennas is above 4.
UR - https://www.scopus.com/pages/publications/39349101604
U2 - 10.1109/GLOCOM.2007.554
DO - 10.1109/GLOCOM.2007.554
M3 - Conference contribution
AN - SCOPUS:39349101604
SN - 1424410436
SN - 9781424410439
T3 - GLOBECOM - IEEE Global Telecommunications Conference
SP - 2927
EP - 2931
BT - IEEE GLOBECOM 2007 - 2007 IEEE Global Telecommunications Conference, Proceedings
T2 - 50th Annual IEEE Global Telecommunications Conference, GLOBECOM 2007
Y2 - 26 November 2007 through 30 November 2007
ER -