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Xmatchpro lossless compression
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Application background 800x600 The
Lossless data compression system is a derivative of the XMatchPro Algorithm which originates from previous research of the authors and advances in FPGA technology.
The flexibility provided by using this technology is of great interest since
the chip can
be adapted to the requirements of a particular application easily. The
drawbacks of<
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Analysis of peak to average power ratio of DHT M-Q
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Application background High Peak to Average Power Ratio (PAPR) is one of the major drawbacks in Orthogonal Frequency Division Multiplexing (OFDM). The High PAPR increases the complexity of Analogue to Digital (A/D) and Digital to Analogue (D/A) convertors and also reduces the efficiency of RF High Power Amplifier (HPA). In this paper we present an analysis of Discrete Hartley Transform (DHT) pre coded OFDM system using M-QAM (where M=16, 32, 64, 256). We compare the computer simulation results of DHT pre-coded OFDM system with DFT pre coded OFDM system, Walsh Hadamard Transform (WHT) pre coded OFDM system, and Selected Mapping (SLM) based OFDM
system and OFDM conventional. Key Technology PAPR-reduction techniques
Several PAPR reduction techniques have been proposed in the literature. These techniques are divided into two groups - signal scrambling techniques and signal distortion techniques w
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