Kile Park Reed & McManus PLLC
QR decomposition apparatus and method for MIMO system
Provided are a QR decomposition apparatus and method for a MIMO system. The QR decomposition apparatus includes: a norm calculator for calculating a vector size norm for a channel input; a Q column calculator for calculating a column value of a unitary matrix Q by multiplying a delayed channel input with √{square root over (norm)}; an R row calculator for receiving the delayed channel input, the output of the Q column calculator, and 1/√{square root over (norm)}, and calculating a row value of an upper triangular matrix R; a Q update calculator for receiving the delayed channel input, the output of the R row calculator, and a delayed output of the Q column calculator, and calculating a Q update matrix value; and a norm update calculator for receiving a delayed output of the norm calculator and an output of the R row calculator, and outputting a norm update matrix value.
Electronics and Telecommunications Research Institute
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Tae-Hyun Minho Byung-Chan Chanho Kwhang-Hyun Je-Hun Cheol-Jung Sok-Kyu Yu-Ro
Jeon Cheong Kim Yoon Ryu Lee Kim Lee Lee