نتایج جستجو برای: mimo relay network
تعداد نتایج: 699972 فیلتر نتایج به سال:
A virtual multiple-input multiple-output (MIMO) wireless system using the receiver-side cooperation with the compress-and-forward (CF) protocol, is an alternative to a point-to-point MIMO system, when a single receiver is not equipped with multiple antennas. It is evident that the practicality of CF cooperation will be greatly enhanced if an efficient source coding technique can be used at the ...
The concept of cooperative relaying promises gains in robustness and energy efficiency in wireless networks. This survey gives an introduction and overview of promising methods that can be used for cooperative relaying: relay selection protocols, cooperative channel and network coding, and physical layer aspects such as cooperative modulation. The particular methods can be seen as building bloc...
The use of multi-antenna relays has emerged as a very promising technique for combating fading, enhancing throughput and extending coverage in emerging w ireless broadband netw orks.In practical mult i-user multi-relay systems, not all nodes are able (or allow ed) to cooperate during data transmission. Selecting subsets of advantageous relays and users simultaneously for cooperation and communi...
A sphere-based list forwarding scheme for multipleinput multiple-output (MIMO) relay networks is proposed and analysed. Firstly, an estimate forwarding (EF) methods is proposed, which forwards the minimum mean squared error (MMSE) estimate of the source data to the destination. Since it performs like amplify-and-forward (AF) and decode-and-forward (DF) for the low and high signal-to-noise ratio...
In this paper, we investigate how to design effective strategy to improve the transmission data rate for highspeed railway mobile communication system with fountain codes. We consider a cooperative multi-relay architecture, where each relay is equipped with one antenna and the destination is with multiple antennas deployed. To this end, a new information receiving method at the destination is p...
This paper deals with the modeling and analysis of narrowband multiple-input multiple-output (MIMO) mobile-to-mobile (M2M) fading channels in relay-based cooperative networks. In the transmission links from the source mobile station to the destination mobile station via the mobile relay, non-line-of-sight (NLOS) propagation conditions are taken into account. A stochastic narrowband MIMO M2M ref...
In this paper, we consider Rayleigh fading MIMO relay channel with channel state information at the receivers. First, we extend the previously obtained results for the ergodic capacity of uncorrelated and semicorrelated MIMO channels and derive closed-form expressions for the capacity bounds of MIMO relay channel. Next, we study this channel from a new point of view, maximizing coverage region ...
Nowadays, wireless communication system is actively used in everyday life. The most important thing is the performance improvement. In the MIMO-OFDM system can provide multiplexing gain or diversity gain. These gains are obtained in proportion to the increase of the number of antennas. However, the use of the multiple antennas has the problems. Therefore, this paper proposes a cooperative syste...
Multiuser cooperative communication significantly improves the performance of wireless communication networks. One key challenge of multiuser cooperative communication is how to design a cooperative mechanism to incentivize potential relay nodes to help a source node in its data transmission. In this paper, to address this problem, we apply a contract-based principal-agent framework to a cognit...
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