由于可见光通信中可能会受到很多噪声干扰,信道编码受到了广泛的重视,它是重要的通信纠错方法,为改善可见光通信的信道译码性能,提高信息传输效率,降低译码复杂度,采用一种将RS码与LDPC码级联的方案。RS码具有很强的处理突发错误的能力,...由于可见光通信中可能会受到很多噪声干扰,信道编码受到了广泛的重视,它是重要的通信纠错方法,为改善可见光通信的信道译码性能,提高信息传输效率,降低译码复杂度,采用一种将RS码与LDPC码级联的方案。RS码具有很强的处理突发错误的能力,LDPC码具有接近香浓极限的良好性能。该方案实现简单,复杂度低。经仿真结果表明,该方法与未编码时相比,误码率低,纠错能力有明显提升,而且比较级联码中LDPC码不同码长的性能,误码率为10-3时,编码增益提高2 d B左右,适合可见光通信的实际应用的要求。展开更多
The paper review the public-key cryptosystems based on the error correcting codes such as Goppa code, BCH code, RS code, rank distance code, algebraic geometric code as well as LDPC code, and made the comparative anal...The paper review the public-key cryptosystems based on the error correcting codes such as Goppa code, BCH code, RS code, rank distance code, algebraic geometric code as well as LDPC code, and made the comparative analyses of the merits and drawbacks of them. The cryptosystem based on Goppa code has high security, but can be achieved poor. The cryptosystems based on other error correcting codes have higher performance than Goppa code. But there are still some disadvantages to solve. At last, the paper produce an assumption of the Niederreiter cascade combination cryptosystem based on double public-keys under complex circumstances, which has higher performance and security than the traditional cryptosystems.展开更多
文摘由于可见光通信中可能会受到很多噪声干扰,信道编码受到了广泛的重视,它是重要的通信纠错方法,为改善可见光通信的信道译码性能,提高信息传输效率,降低译码复杂度,采用一种将RS码与LDPC码级联的方案。RS码具有很强的处理突发错误的能力,LDPC码具有接近香浓极限的良好性能。该方案实现简单,复杂度低。经仿真结果表明,该方法与未编码时相比,误码率低,纠错能力有明显提升,而且比较级联码中LDPC码不同码长的性能,误码率为10-3时,编码增益提高2 d B左右,适合可见光通信的实际应用的要求。
基金Supported by the Postgraduate Project of Military Science of PLA(2013JY431)55th Batch of China Postdoctoral Second-Class on Fund Projects(2014M552656)
文摘The paper review the public-key cryptosystems based on the error correcting codes such as Goppa code, BCH code, RS code, rank distance code, algebraic geometric code as well as LDPC code, and made the comparative analyses of the merits and drawbacks of them. The cryptosystem based on Goppa code has high security, but can be achieved poor. The cryptosystems based on other error correcting codes have higher performance than Goppa code. But there are still some disadvantages to solve. At last, the paper produce an assumption of the Niederreiter cascade combination cryptosystem based on double public-keys under complex circumstances, which has higher performance and security than the traditional cryptosystems.
