This paper investigates the Diversity Multiplexing Tradeoff (DMT) of the generalized quantizeand-forward (GQF) relaying scheme over the slow fading half-duplex multiple-access relay channel (HD-MARC). The compress-and-forward (CF) scheme has been shown to achieve the optimal DMT when the channel state information (CSI) of the relay-destination link is available at the relay. However, having the...

The advanced technique of multiple beam antennas is recently considered in wireless networks to improve the system throughput by increasing spatial reuse, reducing collisions, and avoiding co-channel interference. The usage of multiple beam antennas is similar to the concept of Space Division Multiple Access (SDMA), while each beam can be treated as a data channel. Wireless networks can increas...

Although multiple-input multiple-output (MIMO) is advantageous on orthogonal frequency division multiple access (OFDMA) system, it may not be possible that practical systems have more than two antennas because of size and cost. Therefore, cooperative communication has been recently proposed as a way to overcome this problem in slow fading wireless environment. However, if cooperative communicat...

Link adaptive relaying (LAR) is one of the most popular techniques which employs soft power scaling approaches at the relay nodes. On the other. Buffer-aided relaying is a new paradigm for wireless cooperative networks. Buffer-Aided Relaying With Adaptive Link Selection – Fixed and Mixed Rate. A wireless relay is a codecadaptive RF receiver with single channel relay. It helps easily deployment ...

In this paper, we investigate the problem of cooperative relay in CR networks for further enhanced network performance. In particular, we focus on the two representative cooperative relay strategies, and develop optimal spectrum sensing and p-Persistent CSMA for spectrum access. Then, we study the problem of cooperative relay in CR networks for video streaming. We incorporate interference align...

This paper concerns two-hop communication over relay-assisted Block fading channel. It is assumed there is not a direct link between the transmitter and the affiliated destination and the communication occurs in two hops through the use of a relay, where the amplify and forward (AF) strategy is employed at this node. In this case, in a Rayleigh block fading channel, the optimal weight function ...

—In this paper we analyze the system performance of multi-source multi-relay with multiple antennas cooperative networks. We present an amplify and forward (AF) multipleinput multiple-output relay scenario, where finite number of sources communicate with single destination via multiple relay access points equipped with finite number of antennas. In this network a relay selection scheme is adop...

In this paper, we investigate the benefit of Joint Network Channel (JNC) coding and decoding for the slow fading Multiple Access Multiple Relay Channel (MAMRC), defined as follows: (1) Independent sources communicate with a single destination in the presence of multiple relays; (2) Each relay is halfduplex and applies a Selective Decode and Forward (SDF) relaying strategy, i.e, it forwards a de...