A simple asynchronous distributed STBC network scheme with full diversity

A simple asynchronous distributed STBC network scheme with full diversity

In this article, we propose a simple distributed space-time block code (STBC) network scheme for asynchronous relay network, where every two traditional relay nodes are combined to one node to amplify and forward the processed signals via the same transmission antenna. In the proposed distributed network scheme, we consider a wireless scenario with frequency selective fading channels. The ortho...

Precoding and Distributed Stbc for Asynchronous Cooperative Diversity

Formobile users without antenna arrays, transmission diversity can be achieved with cooperative spacetime encoded transmissions. In this paper, a new precoding frame-based scheme with packet-wise encoding is proposed. This precoding is based on the addition of a cyclic prefix, which is overhead, so we put more information in it by implementing this cyclic prefix as a training sequence. This sch...

Full-Rate Full-Diversity STBC with Constellation Rotation

In this paper, a class of Generalized Quasi-Orthogonal Space-Time Block Code is proposed to achieve full-rate transmission with low-complexity maximum likelihood decoding. Full transmit-diversity is achieved through rhe constellation rotation technique. Code construction criteria for this class of code are listed. Average lideterminant criterion is proposed for optimizing the degree of constell...

A Full - Diversity Rate - One STBC for Four TxAntennas

Full-Diversity QO-STBC Technique for Large-Antenna MIMO Systems

The need to achieve high data rates in modern telecommunication systems, such as 5G standard, motivates the study and development of large antenna and multiple-input multiple-output (MIMO) systems. This study introduces a large antenna-order design of MIMO quasi-orthogonal space-time block code (QO-STBC) system that achieves better signal-to-noise ratio (SNR) and bit-error ratio (BER) performan...