Browsing by Author "Mesfin, Mulatu"

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    Performance Comparison of Broadband Power Line Communications Using of dm Systems
    (Addis Ababa University, 2007-12) Mesfin, Mulatu; Wolde-Mariam, Wolde-Ghiorgis(Professor)
    This thesis is directed to the performance comparison of broadband power line communications using orthogonal frequency division multiplexing modulation schemes. Remarkable increase is promised in the near future, broadband power line communication systems are a preferable choice over wireless or other Home networking technologies due to factors including ease of installation, availability of AC outlets, higher throughput, low cost, reliability and security. But there is a significant problem of interference (both in-bound and out-bound) which blocks the speed of data processing. This thesis directs to the solution for this problem by using OFDM (BPSK, QPSK, and DPSK) systems and comparing the performances of them obtained from matlab results and selecting the better OFDM system. Lastly the result of this thesis result is advantageous for all societies (urban and rural) enable them to get error free communications through the existed power line grid.