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This paper puts in Cascade the power line communications (PLC) channel and the visible light communications (VLC) channel, in order to use the PLC channel as backbone for the VLC channel. This combination is suitable for applications in which hybrid PLC-VLC systems are needed. We investigate the behaviour of the cascaded channels for a full link transmission. Quadrature phase shift keying combined with orthogonal frequency division multiplexing (QPSK-OFDM) is used over the PLC channel and color shift keying (CSK) is deployed over the VLC channel to convey the information. Cascaded channel variances are analyzed. Complete simulated bit error rate (BER) is analyzed and presented for multiple scenarii that could occur in the two channels.

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Ghana currently has no future energy strategic plan or framework for its generation system apart from the Energy Policy developed by the Energy Commission (EC). The EC based its research on the year 2000 parameters and estimated the energy system up to 2020, which cannot entirely address the current challenges facing the energy sector. The main objective of this paper is to develop an integrated energy planning (IEP) framework for Ghana as a guideline for addressing energy challenges, to promote energy efficiency in both demand and transmission, CO2 emissions reduction, and the utilization of renewable energy sources (RES). The methods used are content analysis, multiple case study, and procedure for IEP framework development. The primary computer tool used for the analysis and future energy projections was Long-range Energy Alternative Planning. The demand forecast was performed using key input parameters, including Gross Domestic Product, population change and urbanization. The overall results of this study suggest 40% of non-conventional renewable energy resources into the country's energy mix, proposed energy efficiency promotion in both demand and transmission, and the utilization of RES integration to save the nation up to about 40% CO2 emissions reduction. The paper recommends strategies to reduce losses in the transmission and distribution systems of Ghana. The paper again recommends the revenues accrued from the carbon tax for maintenance work on the existing equipment, and finally, an integrated energy planning framework was developed to serve as a roadmap for Ghana's energy sector up to the year 2050.