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Table 3 Comparison of the Feedback Bits

From: Orthogonal beamforming using Gram-Schmidt orthogonalization for multi-user MIMO downlink system

 

LF-OSDMA

Extended LF-OSDMA

Proposed method

Step2 or Step II

K(log2 N t M +QSINR)

K(log2 N t M +QSINR)

SQ CSI

Step 5 or Step V

 

K(log2 N t +QSINR)

(K 1)(log2 N t +QSINR)