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OFDMA based cellular radio networks aim to operate as close as possible to frequency reuse distance of one, where the whole spectrum would be available in every cell. Modern systems are able to adjust parameters such as transmission power, modulation, and coding separately for each frequency sub-channel on a very short time scale. This way Fractional Frequency Reuse (FFR) can be applied, allowing...
We propose a novel distributed and low complexity joint channel and power allocation scheme for the uplink of multi-cellular multi-carrier systems. The algorithm is based on the min-sum message passing (MP) scheme that entails passing messages between the base station (BS) and mobile terminals (MTs) with the aim of achieving a low power consumption resource allocation while respecting rate constraints...
Reuse partitioning is a useful method for mitigating co-channel interference (CCI) in orthogonal frequency division multiple access (OFDMA) based cellular environments. In this work, theoretical analysis of a series of reuse partitioning approaches is carried out, which contains the well-known Soft Frequency Reuse (SFR) scheme, the novel Enhanced Fractional Frequency Reuse (EFFR) scheme and two EFFR-derivatives,...
In this paper, a method of Gaussian approximation (GA) in a formulated manner is proposed to model inter-cell interference for OFDMA systems with beamforming. It is based on the parameters of 3GPP spatial channel model (SCM). For single-antenna OFDMA systems, the WINNER project proposed that the inter-cell interference can be modeled as white Gaussian noise. However, as indicated by itself, the validity...
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