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Serially concatenated continuous phase modulation with LDGM codes: Property, Optimization, and Design Principles

Ming Xiao (Institutionen för data- och informationsteknik, Datorteknik (Chalmers)) ; Tor Aulin (Institutionen för data- och informationsteknik, Datorteknik (Chalmers))
IEEE ITSOC Information Theory Workshop 2005 on Coding and Complexity, ITW2005; Rotorua; New Zealand; 29 August 2005 through 1 September 2005 p. 255-257. (2005)
[Konferensbidrag, refereegranskat]

We propose a new scheme of serially concatenated continuous phase modulation (SCCPM) by using nonsystematic low density generator matrix (LDGM) codes as the outer code. A property of the LDGM code degree is investigated. We use the EXIT chart/function to optimize the LDGM codes. The EXIT function of CPM with a fixed SNR (Signal-to-Noise-Ratio) is shown. We derive the union bound to analyze the error floor performance. Design principles are proposed from the analysis process. Numerical results show that this scheme converges earlier (lower SNR) than previous SCCPM for iterative decoding.


Article number 1531899



Denna post skapades 2006-07-04. Senast ändrad 2016-06-17.
CPL Pubid: 21545

 

Institutioner (Chalmers)

Institutionen för data- och informationsteknik, Datorteknik (Chalmers)

Ämnesområden

Information Technology

Chalmers infrastruktur