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Table 1 Comparison for the computational complexity between the proposed and ML schemes

From: On the CFO/Channel estimation technique for MIMO-OFDM systems without using a prior knowledge of channel length

 

Numbers of flops

Algorithm

( N , N g , L )

 

(64,16,1)

(64,16,5)

(128,32,1)

(128,32,5)

(256,64,1)

(256,64,5)

Proposed

1.240E8

1.240E8

4.963E8

4.963E8

1.996E9

1.996E9

ML

1.235E8

1.236E8

4.929E8

4.930E8

1.969E9

1.970E9

  1. (N g =N/4,N t =N r =2,μ=104).