High Rate Concatenated Coding Systems Using Multidimensional Bandwidth Efficient Inner Codes

• Main Authors: DENG, Robert H., COSTELLO, Daniel J. Jr.
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 1989
• Subjects: Information Security
• Online Access: https://ink.library.smu.edu.sg/sis_research/107; https://ink.library.smu.edu.sg/context/sis_research/article/1106/viewcontent/High_rate_concatenated_1989.pdf
• Institution: Singapore Management University

A concatenated coding system using two-dimensional trellis-coded MPSK inner codes and Reed-Solomon outer codes for application in high-speed satellite communication systems was proposed previously by the authors (ibid., vol.37, no.5, p.420-7, May 1989). The authors extend their results to systems using symbol-oriented, multidimensional, trellis-coded MPSK inner codes. The concatenated coding systems are divided into two classes according to their achievable effective information rates. The first class uses multidimensional trellis-coded 8-PSK inner codes and achieves effective information rates around 1 b/dimension (spectral efficiency 2 b/s/Hz). The second class employs multidimensional trellis-coded 16-PSK inner codes and provides effective information rates around 1.5 b/dimension (spectral efficiency 3 b/s/Hz). Both classes provide significant coding gains over an uncoded reference system with the same effective information rate as the coded system. The results show that the symbol-oriented nature of multidimensional inner codes can provide an improvement of up to 1 dB in the overall performance of a concatenated coding system when these codes replace bit-oriented two-dimensional codes