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This paper analyses the impact of imperfect synchronisation in optical orthogonal frequency division multiplexing (OFDM) systems utilising intensity modulation (IM) / direct detection (DD). The use of IM/DD technique inherently eliminates the problem of carrier frequency offset. Therefore, time-frequency synchronisation in optical OFDM system reduces to frame synchronisation and sampling clock synchronisation...
In this paper, a novel decentralised coordinated beamforming technique for interference mitigation in multi-user multiple-input-multiple-output (MIMO) networks is proposed. When the available spectrum is fully reused in all cells, the base station (BS) can potentially activate a beam which causes detrimental co-channel interference (CCI) towards mobile stations (MSs) served by neighbouring cells....
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