Title :
An Efficient Oblique Projection Algorithm for V-BLAST Detection with Novel Ordering
Author :
Ding, Zizhe ; Zhang, Xian-Da ; Gao, Qiubin ; Su, Yong-Tao
Author_Institution :
Tsinghua Univ., Beijing
Abstract :
A novel oblique projection based detection scheme is proposed to reduce the computational cost of the vertical Bell Laboratories Layered Space-Time (V-BLAST) receivers. It constructs the ordinary zero-forcing (ZF) and minimum mean- square error (MMSE) detectors by oblique projector implementation, and has a computationally efficient way via projection matrix recursion. Different from the existing ones, we design a so-called "inverse" detection order to facilitate this new approach, whose complexity compares favorably with the competing alternatives. Theoretical analysis and simulation results show the efficiency of the proposed algorithm.
Keywords :
matrix algebra; mean square error methods; radio receivers; signal detection; MMSE; V-BLAST detection; inverse detection; minimum mean-square error detectors; oblique projection algorithm; ordinary zero-forcing detectors; projection matrix recursion; vertical Bell Laboratories layered space-time receivers; wireless communication; Algorithm design and analysis; Analytical models; Automation; Computational efficiency; Computational modeling; Data mining; Detection algorithms; Detectors; Projection algorithms; Signal analysis;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC-2007 Fall. 2007 IEEE 66th
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-0263-2
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2007.107
