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This letter presents a class of quasi-cyclic (QC) low-density parity-check (LDPC) codes which are efficiently encodable and have better memory efficiency than other randomly constructed QC-LDPC codes. The parity-check matrix of the codes is obtained from a block circulant matrix that is generated from a self-reciprocal generator polynomial of a maximum distance separable (MDS) code by replacing some...
In this paper, space-time coding schemes with full transmit diversity are investigated for unequal error protection (UEP). Effective performance indicies are proposed to measure the intrinsic UEP capability of space-time codes, based on which we demonstrate that space-time trellis codes and superorthogonal space-time trellis codes can be used for UEP as long as the corresponding encoders are properly...
In this paper, a novel approach using frame-based iterative channel fading parameters estimation technique from the received data sequence exploiting orthogonal property of the space-time block (STB) code is proposed. For practical implementation of STB code, the receiver requires to estimate these parameters. Regarding this type of estimation, the inherent orthogonal nature of STB code can be exploited...
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