Precoding design for space-time codes and relay selection with a novel scheme for multiple relay systems

  title={Precoding design for space-time codes and relay selection with a novel scheme for multiple relay systems},
  author={Youyan Zhang and Youming Li},
  journal={EURASIP Journal on Wireless Communications and Networking},
  • Youyan ZhangYouming Li
  • Published 22 October 2018
  • Computer Science, Business
  • EURASIP Journal on Wireless Communications and Networking
In this paper, we consider the joint design of precoding matrices at both the source and relay nodes in a multi-relay system based on perfect and imperfect channel information, and propose the novel relay selection scheme based on log-likelihood ratio (LLR). Moreover, the symbol error rate (SER) for relay selection system based on proposed scheme is analyzed. At first, we design the combined precoding matrices based on respectively the maximum signal-to-noise ratio (SNR) with perfect channel… 



Precoding of Space–Time Block Codes for Relay Networks over Correlated MIMO Channels

Simulation results show that the precoding system combined with orthogonal space–time block codes (STBC) outperforms the STBC-only system in terms of SER, especially at low signal-to-noise ratios.

Beamforming Design and Relay Selection for Multiple MIMO AF Relay Systems with Limited Feedback

  • Tao TaoA. Czylwik
  • Computer Science, Business
    2013 IEEE 77th Vehicular Technology Conference (VTC Spring)
  • 2013
A new scheme of limited feedback joint effective relay selection and beamforming vector design is proposed, which uses a new strategy to share channel information between relay and destination and outperforms conventional schemes, while having lower computational complexity and lower feedback delay.

Precoder Design for OSTBC Based AF MIMO Relay System With Channel Uncertainty

This work shows that the problem of maximizing the minimum signal-to-noise ratio at the destination can be exactly reformulated as a convex optimization problem, and provides an approximate semi-analytical approach which significantly reduces the computational cost of solving the convex problem.

Performance Analysis of MIMO Relay Wireless Networks With Orthogonal STBC

This paper derives a simple approximate symbol error rate (SER) expression for the multiple-relay channels with and without relay selection revealing a higher achievable diversity order by using relay selection than its counterpart with fixed relay configuration.

New Beamforming and Relay Selection for Two-Way Decode-and-Forward Relay Networks

A maximum likelihood (ML) detector at the multiple-antenna relay is used, and it is proved that this decoding rule can achieve full diversity order at themultiple access (MAC) phase of the MABC protocol.

Joint relay selection and cooperative beamforming in two-hop multi-relay decode-and-forward networks

A new beamforming at the relay is proposed that selects the best two among several relays and then the selected relays forward their detected symbols in a common channel to the destination and achieves full diversity order.

Performance analysis of a cooperative SC-FDE D-STBC transmission system with best relay selection

A distributed space-time block-coding (D-STBC) scheme based on best relay selection (BRS) is designed for single carrier frequency domain equalization (SC-FDE) cooperative transmission system with multiple relays to reveal the diversity gain of the designed scheme.

A Robust Opportunistic Relaying Strategy for Co-Operative Wireless Communications

Analytical and numerical results reveal that a full diversity of K is reaped by the proposed scheme when the knowledge of CSI is perfect, and OSTC's capacity is remarkably higher than that of the existing schemes based on orthogonal transmission.

Relay Selection for Cognitive Massive MIMO Two-Way Relay Networks

Simulation results validate the analytical asymptotic results and qualify CR massive MIMO TWRNs as a possible candidate for future wireless systems.

Joint Antenna-and-Relay Selection in MIMO Decode-and-Forward Relaying Networks Over Nakagami-m Fading Channels

A downlink multiple-input multiple-output decode-and-forward relaying network is analyzed by considering Nakagami-$m$ fading as a model for the channel gains and using a joint scheme (JS), which joints the relay selection and the antenna selection at the base station and the selected relay.