Method for detecting transmit signal using devide decoding and device thereof

TL;DR: In this article, a method for detecting a transmission signal by applying a division and detection scheme and a device thereof are provided to reduce calculation complexity for the signal detection while guaranteeing performance in detecting the signal whose strength is more than a set value by considering calculation amount for the performance of detecting signal in an MIMO(Multiple Input Multiple Output) system.

Abstract: A method for detecting a transmission signal by applying a division and detection scheme and a device thereof are provided to reduce calculation complexity for the signal detection while guaranteeing performance in detecting the signal whose strength is more than a set value by considering calculation amount for the performance in detecting the signal in an MIMO(Multiple Input Multiple Output) system. A device of a method for detecting a transmission signal by applying a division and detection scheme comprises a QR decomposition unit(100), a vector calculation unit(200), a division unit(300) and a detection unit(400). The QR decomposition unit(100) performs a resorted QR decomposition scheme for a matrix(B) which expresses a channel state, and obtains a unitary matrix(Q) and an upper triangle matrix(R). The vector calculation unit(200) multiplies a transpose of the unitary matrix(Q) by a received signal and calculates a vector. The division unit(300) divides the upper triangle matrix, inputted from the QR decomposition unit(100), into plural sub upper triangle matrixes, and also divides the vector, inputted from the vector calculation unit(200) in accordance with the divided plural sub upper triangle matrixes. The detection unit(400) detects mesh points in accordance with each divided sub vectors by using the plural sub upper triangle matrixes.