등록
구 복호기 및 그의 복호 방법
 발명자

오성근, 권동승, 한희구, 김성락, 이승준
 출원번호

11722131 (2005.12.21)
 공개번호

20080313252 (2008.12.18)
 등록번호
 8117522 (2012.02.14)
 출원국
 미국
 초록
 A sphere decoder sets a Euclidean distance between a lattice vector obtained by using an MMSE or ZF estimate and a received signal as an initial radius, further reduces the initial radius, and searches lattices points included inside a hypersphere with the further reduced initial radius. In addition, one lattice vector having a minimum Euclidean distance is output. One dimension is selected to reduce an initial radius, and estimates in other dimensions are kept fixed, excluding the selected dimension. Then candidate lattice points are searched in the selected dimension, excluding a current estimate, such that a minimum Euclidean distance and a lattice point estimate corresponding to the minimum Euclidean distance are obtained. The initial radius is updated by the minimum Euclidean distance, and a final lattice vector is constructed by combining a lattice point estimate corresponding to the initial radius and the lattice point estimates in other dimensions.
 KSP 제안 키워드
 Lattice points, One dimension, Sphere decoder, decoding method, euclidean distance, initial radius, minimum Euclidean distance, point estimate
 패밀리
