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Optimum resource allocation in cooperative networks has been studied for diverse system setups and with various optimization metrics. However, there lacks a unifying framework delineating the effects of different factors on resource optimization and its resultant benefit. In this paper, we investigate the relative effects of the optimization metric (error rate vs. outage probability), modulation type...
The enhancement of cellular networks with relaying technologies is expected to bring significant techno-economic benefits, but proper allocation of resources may be a challenging task. This paper addresses the question whether cross-layer optimization is essential for obtaining the expected relaying benefits. We present a network dimensioning approach based on joint routing and radio resource allocation...
Optimum resource allocation is essential for wireless cooperative networks. Instead of limiting to energy optimization, we recently investigated the two-dimensional energy and location optimization with arbitrary number of relays, and in the presence of possible direct source-destination link. In this paper, we consider several practical issues in such a 2-D optimization. These issues include the...
We consider the problem of beamforming codebook design for limited feedback half-duplex multiple-input multiple output (MIMO) amplify-and-forward (AF) relay system. In the first part of the paper, the direct link between the source and the destination is ignored. Assuming perfect channel state information (CSI), we show that the source and the relay should map their signals to the dominant right singular...
This paper explores the attributes, layering models and objective functions in cross layer designs for mobile ad hoc wireless networks by taking all the statistical characteristics and constraints from the physical (PHY) layer, media access control (MAC) layer and network (NET) layer into consideration. This paper reviews the entire network optimization across all the PHY/MAC/NET layers. At the PHY...
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