Future Communication networks are tending towards a diverse wireless networking world where the positioning information (PI) could be helpful in different techniques like the dynamic resource allocation. On the other hand, the PI could be widely used for cooperative techniques in the relay and/or routing selection process. In this paper, we propose to use the PI in the selection of the relays a...

This paper presents analytical solutions for the performance of a single relay aided amplify-and-forward (AF) direct sequence code division multiple access (DS-CDMA) system over Rayleigh/Nakagami-m fading channels. The source-destination channel is assumed to be Rayleigh distributed while relay-destination link is Nakagami-m distributed. First, a cumulative distribution function (CDF) is derive...

The impact of outdated channel state information (CSI) on the performance of relay selections, including the partial relay selection and the best relay selection, is studied, with amplify-and-forward (AF) mode cooperative systems being considered. The proposed method is analyzed by deriving the asymptotic closed-form expressions for some figures of merit such as the outage probability and the s...

This paper analyses the bit error rate (BER) and capacity behaviour of orthogonal frequency division multiplexing (OFDM) and cyclic prefix based single carrier (CP-SC) systems using amplify and forward relay (AF) with two hops wireless channel type 1 ( Rayleigh-AF-UWB) and channel type 2 (Exponentially decaying multipath-AF-UWB). We consider Saleh-Venezuela [SV] channels-CM1, CM2, CM3 and CM4 f...

In a bi-directional relay channel, two nodes wish to exchange independent messages over a shared wireless half-duplex channel with the help of a relay. In this paper, we derive achievable rate regions for four new half-duplex protocols and compare these to four existing half-duplex protocols and outer bounds. In time, our protocols consist of either two or three phases. In the two phase protoco...

This work focuses on the half-duplex (HD) relaying based on the generalized quantize-andforward (GQF) scheme in the slow fading Multiple Access Relay Channel (MARC). We consider the case that the relay has no channel state information (CSI) of the relay-to-destination link. Relay listens to the channel in the first slot of the transmission block and cooperatively transmits to the destination in...

—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...

This work focuses on the half-duplex (HD) relaying based on the generalized quantize-andforward (GQF) scheme in the slow fading Multiple Access Relay Channel (MARC). We consider the case that the relay has no channel state information (CSI) of the relay-to-destination link. Relay listens to the channel in the first slot of the transmission block and cooperatively transmits to the destination in...

Recently, energy harvesting (EH) has emerged as a promising way to realize green communications. In this paper, we investigate the multiuser transmission network with an EH cooperative relay, where a source transmits independent information to multiple destinations with the help of an energy constrained relay. The relay can harvest energy from the radio frequency (RF) signals transmitted from t...

In this paper, we study the multiple-input–multipleoutput two-way relay channel (MIMO-TWRC) when the nodes and relay use analog beamforming. Following the amplify-andforward (AF) strategy, the problem consists of finding the transmit and receive beamformers of the nodes and relay (as well as the power allocated to each one) that achieve the boundary of the optimal rate region. To solve it, we f...