[Discuss-gnuradio] SVD from LAPACK takes too long time

Dear all,

I got trouble with Singular Value Decomposition computation in GNU Radio using LAPACK. I use SVD to build a precoder for a secondary transmitter in a cognitive radio model. It takes too long times to handle a 128x144 matrix with complex entries, and therefore, the data stream to be transmitted seem to be really slow in rate. 

Is there any other way to compute SVD faster? FYI, I just need the V* matrix within the result (U, S, V*).

Thanks,

Hoang

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Hoang Ngo-Khac

Research Assistant - Signal and System Lab, FET, UET

Vietnam National University-Hanoi (VNU-H)

G2-206, 144 Xuan Thuy, Cau Giay, Hanoi, Vietnam

Alternative email:  hoangnk_55@vnu.edu.vn

Mobilephone:  +84.163.682.7874