A concatenated coded modulation scheme and its iterative receiving for deep space communications

Due to the long propagation distance between spacecraft and Earth station the high power efficiency is more important for deep space communication than others communication systems. One novel coded modulation scheme based on AR4JA code and FQPSK (Feher's QPSK) is proposed out in this paper, which can alleviate the challenge of huge loss in space communications. The novel approach utilizes the property that AR4JA code enables communication at very low signal noise rate and constant envelope property of FQPSK to overcome the nonlinear impact of high power amplifier. At receiver, large gain can be attained by iterative demodulation and decoding. The paper presents the system model of coded modulation and proposes out iterative receive algorithm. Finally, the bit error rate performance of new scheme is confirmed by computer simulation.

[1]  Marvin K. Simon,et al.  Performance of coded OQPSK and MIL-STD SOQPSK with iterative decoding , 2004, IEEE Transactions on Communications.

[2]  Zhang Geng-xin.  A Constant Envelope Enhanced FQPSK Modulation for Deep Space Communication , 2009 .

[3]  Stephan ten Brink,et al.  Design of low-density parity-check codes for modulation and detection , 2004, IEEE Transactions on Communications.

[4]  Gianluigi Ferrari,et al.  Serial concatenation of LDPC codes and differential modulations , 2005, IEEE Journal on Selected Areas in Communications.

[5]  Dariush Divsalar,et al.  The Development of Turbo and LDPC Codes for Deep-Space Applications , 2007, Proceedings of the IEEE.

[6]  Lu Jianhua.  High efficiently joint LDPC coded recursive MSK modulation , 2010 .

[7]  T. Nelson,et al.  Coded FQPSK and SOQPSK with iterative detection , 2005, MILCOM 2005 - 2005 IEEE Military Communications Conference.

[8]  Marvin Kenneth Simon,et al.  Bandwidth-Efficient Digital Modulation with Application to Deep Space Communications , 2003 .

[9]  Gengxin Zhang,et al.  A novel waveform for FQPSK modulation , 2008, 2008 11th IEEE Singapore International Conference on Communication Systems.

[10]  Dariush Divsalar,et al.  A soft-input soft-output APP module for iterative decoding of concatenated codes , 1997, IEEE Communications Letters.

[11]  Haige Xiang,et al.  A Joint Demodulation and Decoding Algorithm for High Order LDPC Coded Modulations: A Joint Demodulation and Decoding Algorithm for High Order LDPC Coded Modulations , 2010 .