NDLI: The Effects of Multipath on OFDM Systems for Broadband Power-Line Communications a Case of Medium Voltage Channel

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The Effects of Multipath on OFDM Systems for Broadband Power-Line Communications a Case of Medium Voltage Channel

Content Provider	CiteSeerX
Author	Anatory, Justinian Theethayi, N. Mwase, C. Mvungi, N. H.
Abstract	Abstract—Power-line networks are widely used today for broadband data transmission. However, due to multipaths within the broadband power line communication (BPLC) systems owing to stochastic changes in the network load impedances, branches, etc., network or channel capacity performances are affected. This paper attempts to investigate the performance of typical medium voltage channels that uses Orthogonal Frequency Division Multiplexing (OFDM) techniques with Quadrature Amplitude Modulation (QAM) sub carriers. It has been observed that when the load impedances are different from line characteristic impedance channel performance decreases. Also as the number of branches in the link between the transmitter and receiver increases a loss of 4dB/branch is found in the signal to noise ratio (SNR). The information presented in the paper could be useful for an appropriate design of the BPLC systems. Keywords—Communication channel model, Power-line communication, Transfer function, Multipath, Branched network, OFDM, QAM, performance evaluation
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Access Restriction	Open
Subject Keyword	Load Impedance Keywords Communication Channel Model Broadband Power-line Communication Transfer Function Abstract Power-line Network Sub Carrier Orthogonal Frequency Division Multiplexing Quadrature Amplitude Modulation Power-line Communication Stochastic Change Performance Evaluation Broadband Power Line Communication Channel Capacity Performance Ofdm System Bplc System Branched Network Typical Medium Voltage Channel Medium Voltage Channel Appropriate Design Network Load Impedance Broadband Data Transmission
Content Type	Text
Resource Type	Article

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