In this paper, we study the joint allocation of three types of resources, namely, power,
subcarriers and relay nodes, in multi-relay assisted dual-hop cooperative OFDM systems. All …

Efficient utilization of radio resources in wireless networks is crucial and has been
investigated extensively. This letter considers a wireless relay network where multiple user …

In this paper, a point-to-point orthogonal-frequency-division multiplexing (OFDM) system
with a decode-and-forward (DF) relay is considered. The transmission consists of two hops …

This study considers an orthogonal frequency-division multiple-access (OFDMA)-based
multi-user two-way relay network where multiple mobile stations (MSs) communicate with a …

The resource allocation problem is investigated for relay-based multi-user cooperative
Orthogonal Frequency Division Multiple Access (OFDMA) uplink system, considering …

In this paper, we investigate two selective relaying schemes in cooperative OFDM systems.
Selective OFDMA relaying, where the relay selection is performed in a per-subcarrier …

Cooperative transmissions have been shown to be able to greatly improve system
performance by exploring the broadcasting nature of wireless channels and cooperation …

We consider a two-hop relaying network in which orthogonal frequency division multiplexing
(OFDM) is employed for the source-to-destination, the source-to-relay and the relay-to …

In this paper, we formulate resource allocation and scheduling for multi-cell orthogonal
frequency division multiple access (OFDMA) systems with half-duplex decode-and-forward …

We consider a two-hop relay link in which orthogonal frequency division multiplexing
(OFDM) is used on both hops. Under a joint sum-power constraint, our aim is to allocate …