Title :
Rapid Prototyping of an Improved Cholesky Decomposition Based MIMO Detector on FPGAs
Author :
Chu, Xuezheng ; Benkrid, Khaled ; Thompson, John
Author_Institution :
Inst. of Electron., Commun. & Inf. Technol., Queens Univ. Belfast, Belfast, UK
fDate :
July 29 2009-Aug. 1 2009
Abstract :
Multiple Input Multiple Output (MIMO) has gradually become the most promising technique for next generation wireless telecommunication systems. MMSE-VBLAST is a MIMO detection algorithm which has a performance close to the maximum likelihood with considerably low complexity. The improvements in the algorithm presented in this paper result in substantial computation savings which in turn leads to substantial hardware savings, as it avoids the expensive hardware cost of square root and division operations. This improvement decreases the computational complexity of MMSE-VBLAST with no performance penalty compared to previous MMSE-VBLAST algorithms. This has been validated for 2 times 2 and 4 times 4 MIMO systems using a rapid prototyping methodology that starts with pure software formulation in MATLAB and ends with an optimized equivalent FPGA hardware implementation.
Keywords :
MIMO communication; communication complexity; field programmable gate arrays; matrix algebra; maximum likelihood estimation; mean square error methods; FPGA; MIMO detection algorithm; MMSE-VBLAST algorithm; cholesky decomposition; computational complexity; maximum likelihood method; minimum mean square error algorithm; multiple-input multiple-output detector; next generation wireless telecommunication system; rapid prototyping methodology; square root operation; substantial computation saving; substantial hardware saving; triangular matrix inversion; Computational complexity; Costs; Detection algorithms; Detectors; Field programmable gate arrays; Hardware; MIMO; Maximum likelihood detection; Prototypes; Telecommunication computing; FPGA; MIMO; MMSE-VBLAST; System Generator;
Conference_Titel :
Adaptive Hardware and Systems, 2009. AHS 2009. NASA/ESA Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
978-0-7695-3714-6
DOI :
10.1109/AHS.2009.40