국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Rate-Compatible LDPC Codes with Linear Minimum Distance
저자	Divsalar, Dariush;; Jones, Christopher;; Dolinar, Samuel
Keyword	DECODING;; PARITY;; ERROR DETECTION CODES;; WIRELESS COMMUNICATION;; COMPUTER SYSTEMS PROGRAMS;;
URL	http://hdl.handle.net/2060/20090032087
보고서번호	NPO-43949
발행년도	2009
출처	NTRS (NASA Technical Report Server)
ABSTRACT	A recently developed method of constructing protograph-based low-density parity-check (LDPC) codes provides for low iterative decoding thresholds and minimum distances proportional to block sizes, and can be used for various code rates. A code constructed by this method can have either fixed input block size or fixed output block size and, in either case, provides rate compatibility. The method comprises two submethods: one for fixed input block size and one for fixed output block size. The first mentioned submethod is useful for applications in which there are requirements for rate-compatible codes that have fixed input block sizes. These are codes in which only the numbers of parity bits are allowed to vary. The fixed-output-blocksize submethod is useful for applications in which framing constraints are imposed on the physical layers of affected communication systems. An example of such a system is one that conforms to one of many new wireless-communication standards that involve the use of orthogonal frequency-division modulation