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This paper demonstrates a novel approach for motion classification and analysis using pressure sensors worn by a person. The pressure signal is analysed to search for features corresponding to the motion states, and matched against typical human walking pattern. A prototype system is developed which provides motion classification results in real-time. The motion classification results consists of...
A novel technique for jointly allocating sub-carriers, modulation and coding scheme (MCS) and transmit power in an orthogonal frequency division multiple access (OFDMA) cellular network using ant-colony optimization technique is proposed. Different combinations of user indices, MCS indices and subcarrier indices form the nodes in the graph. Each possible assignment of the above resources is a path...
In this article, self-organising interference management for optical wireless networks deployed inside an aircraft cabin is investigated. A user that has received data in a given frame and intends to continue receiving data in the next frame broadcasts a busy burst (BB) in a time-multiplexed BB slot. The tagged access point (AP) intending to reuse a resource reserved in a neighbouring cell must listen...
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, self-organising interference management for optical wireless networks deployed inside an aircraft cabin is investigated. A user that has successfully received data in a given frame and intends to continue receiving data in the next frame broadcasts a busy burst (BB) in a time-multiplexed BB slot. A neighbouring access point (AP) that intends to reuse the reserved resource listens to...
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....
A novel decentralized coordinated multipoint (CoMP) technique facilitated by receiver feedback is proposed. If multiple base stations (BSs) access the same radio resource; downlink transmissions from one BS cause co-channel interference (CCI) towards towards users served by neighboring BSs. To mitigate CCI in a multiple-input-multiple-output (MIMO) network, the mobile station (MS) scheduled in a tagged...
Decentralised interference management for orthogonal frequency division multiple access (OFDMA) operating in time division duplex (TDD) cellular systems is addressed. Interference aware allocation of time-frequency slots is accomplished by letting receivers transmit a busy burst (BB) in a time-multiplexed minislot, upon successful reception of data. Exploiting TDD channel reciprocity, an exclusion...
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