This paper is based on the magnitude overestimation correction of the variable message by using two normalized factors in each iteration for LDPC min-sum decoding algorithm. The variable message is modified with a normalized factor when there is a sign change and with another normalized factor when there is no sign change during any two consecutive iterations. This paper incorporates QC LDPC co...

In this paper, we propose our work on camera network using the MIMO Y channel. In this setup, each camera delivers information for connected cameras via the intermediate relay while receiving side information from other cameras. As an example for demonstrating the validity of proposed scheme, we introduce an interesting application of our camera network to sports activity analysis, where a virt...

In this paper, my aim is to provide an overview of the key challenges arising from Het Nets, Relay Nodes, SON, RRM, Co-MIMO, Cognitive Radio Network, DAS and highlight their importance. Recent research mainly concentrates on the aspect of interference mitigation, radio resource utilization, fairness, complexity and QoS. Improve the coverage as well as the capacity with high speed achieved by HE...

In this study, the authors consider the min–max mean squared error (MSE)-based linear transceiver–relay design for multiple-input–multiple-output (MIMO) interference relay channel, where a finite number of half-duplex MIMO amplify and forward relays assist the communication between multiple source–destination pairs. The problem is formulated as minimising the maximum MSE among all data streams ...

We derive the mutual information (MI) of the wireless links in a buffer-aided full-duplex (FD) multiple-input multiple-output (MIMO) relaying network. The FD relay still suffers from residual selfinterference (RSI), after the application of self-interference mitigation techniques. We investigate both cases of the slow-RSI channel, where the RSI is fixed over the entire codeword, and the fast-RS...

In this paper, we investigate opportunistic relay and jammer cooperation schemes in multiple-input multiple-output (MIMO) buffer-aided relay networks. The network consists of one source, an arbitrary number of relay nodes, legitimate users and eavesdroppers, with the constraints of physical layer security. We propose an algorithm to select a set of relay nodes to enhance the legitimate users’ t...

In this chapter, a cooperative broadband relay-based resource allocation technique is proposed for adaptive bit and power loading multiple-input-multiple-output/orthogonal frequency division multiplexing (MIMO-OFDM) system. In this technique, sub-channels allocation, M-QAM modulation order, and power distribution among different sub-channels in the relay-based MIMO-OFDM system are jointly optim...

We consider two-way relay channel with three nodes: two source nodes and one relay in the middle. We characterize the end-to-end rate regions achieved by MAClayer network coding (MAC-XOR) and PHY-layer network coding (PHY-XOR). Noticing that MAC-XOR does not always achieve better performance than pure multi-hopping, we show a simple opportunistic scheduling to achieve the combined region. A sim...

This thesis is devoted to studying two wireless relay network models, namely wireless tandem multiple-input-multiple-output (MIMO) relay networks and wireless two-hop multicast relay networks. Regarding wireless tandem MIMO relay networks, we develop a systematic approach to analyze their fundamental diversity-multiplexing tradeoff (DMT) under the assumption that the relays implement a class of...