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Video applications are an important part of mobile devices. Capacity of battery is increasing maximum of 10 percentage per year, which may not be sufficient for upcoming application and operating system. Power consumption by video application depends on factors like network load, signal quality, bandwidth and it can be optimized through heuristics based streaming. The work presented here exploits adaptive bitrate streaming to determine the optimum bitrate for available bandwidth. Selection of optimum bitrate ensures quality delivery of video as well as optimum power consumption of the device. Moving Picture Expert Group - Dynamic Adaptive Streaming over HTTP (MPEG-DASH) has been used for implementing the switching between the bitrates. The fifteen bitrates selected for encoding are closer to the mean value which is available for streaming. The approach has been tested on an Android based tablet over thirty videos to check the dependency of the factors on each other. This is the major approach to establish relationship between bitrate and power consumption for video streaming. The result obtained shows a 14 percentage of power saving with minimum buffering and good quality of service.

Wireless open access research platform is one of the latest trend in the field of programmable hardware. It's reference library is openly accessible whereas hardware is believed to be of high performance. This platform can be used for designing and implementing state of the art wireless systems from basic elements to the end user level. WARP board houses a VIRTEX-7 Field programmable gate array. Software tools from Xilinx are required to create custom designs on this FPGA. The orthogonal frequency division multiplexing Transmitter with 16 subcarriers and quadrature phase shift keying mapper is designed in system generator using Xilinx specific blocks. The design is then exported as a peripheral core to Xilinx platform studio (XPS), where a hardware platform is created. It is then integrated with other available peripheral cores and then exported to Software development kit (SDK). A transmitter application is created using embedded C code. Then the FPGA is programmed using a JTAG programming cable. This is the first approach which implements OFDM transmitter using WRAP v3 board. The files generated in XPS and SDK are dumped into the FPGA. Once FPGA is programmed, the transmitter starts transmission through GSM antenna. The data transmitted is displayed on the monitor and also on hex displays on the board.