中文摘要：

为深空间的光通讯的一个编码调整计划被建议，它基于的外部 single-parity-check (SPC ) 是镇静的产品代码， interleaver，一个小点蓄电池和脉搏位置调整(PPM ) 。它作为 SPC-APPM 代码被提交，它用标准译码涡轮的技术与一个反复的解调器解码器被译码。调查证明计划有在 1/2 上面的为所有率的复杂性，好表演和灵活代码率的低编码并且译码的优点。同时，模拟结果证明 SPC-APPM 提供类似于低密度的 parity-check-APPM (LDPC-APPM ) 的表演，比 LDPC-PPM 和产品优异积累 code-PPM (PA-PPM ) ，尽管晚辈到连续地并置的 PPM (SCPPM ) 。以 105 的位错误率(BER ) ， SPC-APPM 的性能是比 LDPC-PPM 好的大约 0.7 dB 和比 PA-PPM 好的 1.2 dB。

英文摘要：

A coded modulation scheme for deep-space optical communications is proposed, which is composed of an outer single- parity-check （SPC）-based product code, an interleaver, a bit-accumulator and a pulse-position modulation （PPM）. It is referred as SPC-APPM code, which is decoded with an iterativc demodulator-decoder using standard turbo-decoding techniques. Investigations show that the scheme has the advantages of low encoding and decoding complexities, good performance and flexible code rate for all rates above I/2. Meanwhile, simulation results demonstrate that the SPC-APPM provides the performance similar to the low-density parity-check-APPM （LDPC-APPM）, superior to the LDPC-PPM and product accumulate code-PPM （PA-PPM）, although inferior to serially concatenated PPM （SCPPM）. At the bit error rate （BER） of 105, the performance of SPC-APPM is about 0.7 dB better than LDPC-PPM and 1.2 dB better than PA-PPM.