Campus Units

Electrical and Computer Engineering, Mathematics

Document Type

Conference Proceeding


2009 IEEE International Conference on Communications

Publication Version

Accepted Manuscript

Link to Published Version

Publication Date


Journal or Book Title

IEEE International Conference on Communications, 2009. ICC '09.



Conference Title

2009 IEEE International Conference on Communications

Conference Date

June 14-18, 2009


Dresden, Germany


We present the design and analysis of a family of codes based on the efflciently-encodable rate-compatible irregular LDPC codes ( E² RC codes) introduced by Kim, Ramamoorthy and Mclaughlin '06. The basic idea is to utilize the structured parity part (of the parity check matrix) of E² RC codes and design optimal degree distributions for the systematic part based on EXIT chart analysis. In this work, we propose a new technique for computing EXIT functions of the structured parity part without resorting to Monte Carlo simulations. Our method provides smoother EXIT functions in substantially lesser time. Furthermore, we pose and solve the problem of designing good codes using linear programming. Next, we consider the performance of rate-compatible codes under puncturing using EXIT charts. Finally, we propose joint optimization of our codes at any specified code rate(s) which has not been explored in previous design of rate-compatible punctured codes.


This is a manuscript of a proceeding from the IEEE International Conference on Communications (2009), doi:10.1109/ICC.2009.5198897. Posted with permission.


Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Copyright Owner




File Format


Published Version


Article Location