A simple design of space-time block codes achieving full diversity with linear receivers

Orthogonal space-time block codes (OSTBC) are attractive in that they can achieve full diversity and linear complexity of maximum likelihood (ML) decoding. However, the OSTBC have a low symbol rate due to the limitation of the orthogonality of the code structure. Most of the high-rate STBC achieve full diversity based on ML decoding at the receiver that is computationally expensive. In order to achieve full diversity with linear receivers, recently Liu-Zhang-Wong and Shang-Xia introduced new STBC. In this paper, we propose a simple design of STBC which have a high rate and achieve full diversity with linear receivers. The proposed STBC are constructed by embedding Alamouti codes into a Toeplitz matrix. Simulation results show that in comparison with some existing codes for a given codeword length the proposed STBC can give a better bit error rate (BER) performance while having a high rate.