Title: Efficient Algorithmic and Architectural Optimization of QR-based Detector for V-BLAST
Authors: Fariborz Sobhanmanesh, Saeid Nooshabadi
Abstract: The use of multiple antennas at both transmitting and receiving sides of a rich scattering communication channel improves the spectral efficiency and capacity of digital transmission systems compared with single antenna communication systems. However algorithmic complexity in the realization of the receiver is a major problem for its implementation in hardware. In this paper we have investigated a near optimal algorithm for V-BLAST detection in MIMO wireless communication systems based on the QR factorization technique, offering remarkable reduction in the hardware complexity. Specifically, we have analyzed some hardware implementation aspects of the selected algorithm through MATLAB simulations and demonstrated its robustness. This technique can be used in an efficient fixed point VLSI implementation of the algorithm. We have also provided the VLSI architecture that implements the algorithm.