Code Design and Performance Analysis of a Novel Concatenated LDPC-STBC for Media Communication in Asynchronous Cooperative MIMO Systems

This paper proposes a new cascaded scheme for the asynchronous MIMO systems. In the scheme, the LDPC code without girth-4 and STBC code with guard intervals were employed. The cascaded code is capable to reduce the error rate and improve the performance of transmission, by taking advantage of both LDPC and STBC techniques. What´s more, this paper adopted the linear dispersion structure to achieve higher throughout than the classical space time code. At last we apply the concatenated code to the video transmission to demonstrate that the concatenation of LDPC-STBC is more effective than which is without encoding or with a single code on transmission performance.