High performance of parallel concatenated code

In this paper, we introduce a kind of high performance of concatenated code that is called parallel concatenated code. Comparing to conventional serial concatenated code, it has more matching room and higher adaptability. Moreover, burst of errors which are aroused by noise are beautiful restrained. For certifying the superiority and practicability, we research a parallel concatenated code by combining the outer algebraic code with the inner Low density Parity Check (LDPC) code. The bit error rate (BER) may be as low as 10^-22 when Signal Noise Ratio (SNR) is 3.9 dB. In the high speed 100 Gp/s optical communication system, it will play a significant role.