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학술대회 Row-splitting design of Low-Density Parity-Check Codes for Gbps transmission
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오종의, 정민호, 유철희, 윤석현, 이석규
Vehicular Technology Conference (VTC) 2007 (Fall), pp.1127-1131
07MM1500, 3Gbps급 4G 무선 LAN 시스템 개발, 방승찬
In this paper, we propose a design methodology of low-density parity check (LDPC) code for very high speed transmission. To support various code rates with reasonable hardware and, possibly, the type-II hybrid automatic repeat request (HARQ), a row-splitting/combining method is employed in conjunction with shortening. In row-splitting approach, a parity check matrix of a high rate mother LDPC code, saying rate 5/6, is designed first and then successively row-split the mother matrix to obtain lower rate codes. Shortening provides us another degree of freedom for rate and frame length flexibility for concatenation with MIMO system. The code performance is investigated in terms of frame error rate and compared with those of the LDPC code proposed in IEEE 802.16e standard. © 2007 IEEE.
KSP 제안 키워드
Degrees of freedom(DOF), Frame length, High Speed, High rate, Hybrid automatic repeat request(HARQ), IEEE 802.16e(Mobile wimax), IEEE 802.16e standard, Low density parity check (LDPC) code, MIMO system, Parity check codes, Type II