Coding for IEEE 802 16 m Document Number

Coding for IEEE 802. 16 m Document Number: IEEE C 802. 16 m-08/539 r 1 Date Submitted: 2008 -07 -06 Source: Mohammed Nafie, Cairo University Ahmed Shalash, Cairo University, Cairo, Egypt Re: IEEE 802. 16 m-08/024: Call for Contributions on Project 802. 16 m System Description Document (SDD) Link Adaptation Abstract : This contribution proposes coding schemes to be included in the SDD Purpose: For discussion and approval by TGm Note: This document does not represent the agreed views of the IEEE 802. 16 Working Group or any of its subgroups. It represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion. It is not binding on the contributor(s), who reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802. 16. Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: <http: //standards. ieee. org/guides/bylaws/sect 6 -7. html#6> and <http: //standards. ieee. org/guides/opman/sect 6. html#6. 3>. Further information is located at <http: //standards. ieee. org/board/pat-material. html> and <http: //standards. ieee. org/board/pat >.

Introduction IEEE C 802. 16 m-08/539 r 1 • There is a need to have several coding schemes that cover the performance/complexity spectrum

IEEE C 802. 16 m-08/539 r 1 Proposed Coding Schmes • We propose to include the following coding schemes: • Convolutional Codes • Concatenated RS-Convolutional codes • LDPC Codes • Turbo Codes

IEEE C 802. 16 m-08/539 r 1 Incremental Redundancy • Each of the proposed coding schemes have been shown to operate in an incremental redundancy fashion

Simulations IEEE C 802. 16 m-08/539 r 1 • We compare – Uncoded system – Shortened RS(102, 94) from (255, 247) – Rate 1/2 802. 16 e Convolutional code – Concatenated RS-Convolutional code

Simulations IEEE C 802. 16 m-08/539 r 1

Coding IEEE C 802. 16 m-08/539 r 1 • Shortened RS block lengths can be chosen so as to fit in n numbers of resource blocks – The concatenated scheme offers a gain over using only convolutional codes for a low overhead • The exact Turbo and LDPC codes to use is FFS

Text IEEE C 802. 16 m-08/539 r 1 • Proposed Text: “The coding schemes used in 802. 16 m will be Convolutional Codes Concatenated shortened RS-Convolutional LDPC codes Turbo codes”