| Summary: | 碩士 === 元智大學 === 通訊工程學系 === 101 === The study of self-optimizing inter cell interference coordination (ICIC) control in heterogeneous network(HetNet) is the main purpose of the thesis. The thesis contains the design of self-optimizing power control (SOPC)
mechanism and the design of self-optimizing beam nulling control (SOBNC) mechanism. The optimization objective of SOPC is to make the uplink DBF-SC-FDMA and downlink DBF-OFDM transceivers to generate the minimum transmit power and the maximum average throughput under different data rate, number of mobile users, user speed and interference
power autonomously. The optimization objective of SOBNC is to make the uplink DBF-SC-FDMA transceiver to generate the minimum interference power under different angular spread and interference power
autonomously.
The SOPC mechanism can also use the positioning results to transmit stronger power and assign more data rate on the direction of a higher number of mobile users, and thus improve system average throughput. The SOBNC, which estimates the signal-to-interference-plus-noise ratio (SINR), the DOAs of target signals and interference signals, and angular spread from the reception signals of smart array antenna, is able to autonomously assign the proper number of nulls to the adaptive digital beamformer (DBF)in the varying interference power and angular spread environments to achieve the optimum objectiveness of maintaining the output SINR higher than a threshold value.
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