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Quasi-cyclic Random Projection Code and Hardware Implementation
College of Electronics and Information Engineering, Tongji University, Shanghai, China
College of Electronics and Information Engineering, Tongji University, Shanghai, China; School of Mathematics and Computer Science, Gannan Normal University, Ganzhou, China
College of Electronics and Information Engineering, Tongji University, Shanghai, China
College of Electronics and Information Engineering, Tongji University, Shanghai, China
- 1 College of Electronics and Information Engineering, Tongji University, Shanghai, China
- 2 College of Electronics and Information Engineering, Tongji University, Shanghai, China; School of Mathematics and Computer Science, Gannan Normal University, Ganzhou, China
- 3 College of Electronics and Information Engineering, Tongji University, Shanghai, China
- 4 College of Electronics and Information Engineering, Tongji University, Shanghai, China
Communications and Network·Volume 05 (2013)·Pages 86–92·Published 27 September 2013·DOI10.4236/cn.2013.53B2017
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Abstract
Random Projection Code (RPC) is a mechanism that combines channel coding and modulation together and realizes rate adaptation in the receiving end. Random projection code’s mapping matrix has significant influences on decoding performance as well as hardware implementation complexity. To reduce hardware implementation complexity, we design a quasi-cyclic mapping matrix for RPC codes. Compared with other construction approaches, our design gets rid of data filter component, thus reducing chip area 7284.95 um2, and power consumption 331.46 uW in 0.13 um fabrication. Our simulation results show that our method does not cause any performance loss and even gets 0.2 dB to 0.5 dB gain at BER 10 -4 .
KeywordsQuasi-cyclicMapping MatrixRandom Projection CodeHardware Implementation
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