The implementation of cooperative diversity with relays has advantages over point-to-point multiple-input multiple-output (MIMO) systems, in particular, overcoming correlated paths due to small inter-element spacing. A simple transmitter with one antenna may exploit cooperative diversity or space time coding gain through distributed relays. In this paper, similar distributed transmission is con...

To be able to meet the expected higher traffic load in the future the capacity in the networks needs to be higher. This is preferably done in the most cost efficient way as possible. Using traditional system tends to be very cost consuming and therefore new kinds of systems are evolving like multi-hop systems, relaying networks or MIMO networks. In this thesis a special kind of relaying network...

Wireless backhaul has been received much attention as an enabler of future broadband mobile communication systems because it can reduce deployment cost of pico-cells, an essential part of high capacity system. A high performance network, high throughput, low average delay and low packet loss rate, is highly Ehab, Kinoshita, Mitsunaga, Higa and Furukawa International Journal of Computer Networks...

Full-Duplex Massive MIMO Multi-Pair Two-Way AF Relaying: Energy Efficiency Optimization Ekant Sharma, Rohit Budhiraja, K Vasudevan and Lajos Hanzo, Fellow IEEE Abstract We consider two-way amplify and forward relaying, where multiple full-duplex user pairs exchange information via a shared full-duplex massive multiple-input multiple-output (MIMO) relay. Most of the previous massive MIMO relayin...

in this paper two different rateless transmissionschemes are developed. in the proposed scheme, relay node candecode and forward the message to the destination if they areable to decode it, or amplify and forward the message to thedestination. based on the analysis and simulation resultsprovided in this paper, the proposed method has bettertransmission time than the scheme which only the relay ...

The problem of jointly optimizing the source precoder, relay transceiver, and destination equalizer has been considered in this paper for a multiple-input-multiple-output (MIMO) amplify-and-forward (AF) relay channel, where the channel estimates of all links are assumed to be imperfect. The considered joint optimization problem is nonconvex and does not offer closed-form solutions. However, it ...

Multicasting is a bandwidth conservation technology that can utilize the resources very efficiently, reduces the traffic volume and improves the network capacity by simultaneously delivering a single stream of information to more than one intended receivers. Wireless medium is inherently multicast in nature and this property can be exploited with virtual MIMO. The improvement in BER can be achi...

Multiple-Input Multiple-Output (MIMO) relay communication systems are used as an efficient system in spectral efficiency and power allocation view point. In these systems, some of the facilities need channel state information (CSI). Besides, new estimation methods based on compressed sensing (CS) are well known for their spectral efficiency and accuracy. In this paper, we have used a Distribute...

Structured Codes in Information Theory: MIMO and Network Applications by Jiening Zhan Doctor of Philosophy in Engineering-Electrical Engineering & Computer Sciences University of California, Berkeley Professor Michael Gastpar, Chair Though random codes are shown to be optimal for point-to-point channels, codes with algebraic structure are found to be useful in many network scenarios. This thesi...