We study the transmission of two correlated and memoryless sources (U, V ) over several multipleuser phase asynchronous channels. Namely, we consider a class of phase-incoherent multiple access relay channels (MARC) with both non-causal and causal unidirectional cooperation between encoders, referred to as phase-incoherent unidirectional non-causal cooperative MARC (PI-UNCC-MARC), and phase-inc...

In this paper, we study resource allocation problem in orthogonal frequency division multiple access multiple-input multiple-output (OFDMA-MIMO) relay systems and formulate the optimal instantaneous resource allocation problem including subcarrier assignment, relay selection and power allocation to maximize system capacity. Based on the assumption that the availability of perfect channel state ...

The issue of resource allocation for MSE minimization in a DS/CDMA amplify-and-forward relayassisted interference channel is addressed in this paper. The resource allocation process is assumed to take place in a hierarchical way. First, the relay announces his amplifyand-forward matrix, and then the multiple access users non-cooperatively react to the relay’s choice. This process is modeled by ...

For high end-to-end channel capacity, the amplify-and-forward scheme multiple-hop multiple-input multiple-output relay system is considered. The distance between each transceiver and the transmit power of each relay are optimized to prevent some relays from being the bottleneck and guarantee high end-to-end channel capacity. According to the proposed transmission environment coefficient, the pa...

This paper studies the setup of a multiple-relay network in which K half-duplex multiple-antenna relays assist in the transmission between a/several multiple-antenna transmitter(s) and a multiple-antenna receiver. Each two nodes are assumed to be either connected through a quasi-static Rayleigh fading channel, or disconnected. We propose a new scheme, which we call random sequential (RS), based...

This report summarize some results from [1, 2, 3] in multiple-access channel (MAC) with user cooperative diversity. Also, a brief discussion over the relationship between this model and other channels, (e.g. MAC with feedback, relay channel), is presented and expected to inspire further discussion on the class as well as help to gain some insight over this particular model.

This paper studies the setup of a multiple-relay network in which K half-duplex multiple-antenna relays assist in the transmission between a/several multiple-antenna transmitter(s) and a multiple-antenna receiver. Each two nodes are assumed to be either connected through a quasi-static Rayleigh fading channel, or disconnected. We propose a new scheme, which we call random sequential (RS), based...

We consider a general multiple antenna network with multiple sources, multiple destinations and multiple relays in terms of the diversity-multiplexing tradeoff (DMT). We examine several subcases of this most general problem taking into account the processing capability of the relays (half-duplex or full-duplex), and the network geometry (clustered or non-clustered). We first study the multiple ...