MIMO _ permutation _ feedback _ cycle ( This field is valid only if CQICH allocation type is set to 0 ) 2 bits 0 b 00 = No MIMO and permutation mode feedback 0 b 01 = The MIMO and permutation mode indication shall be transmitted on the CQICH indexed by the CQICH _ ID every four allocated CQICH transmission opportunity . The first indication is sent on the fourth allocated CQICH frame transmission opportunity . 0 b 10 = The MIMO mode and permutation mode indication shall be transmitted on the CQICH indexed by the CQICH _ ID every eight allocated CQICH transmission opportunity . The first indication is sent on the eighth allocated CQICH transmission opportunity . 0 b 11 = The MIMO mode and permutation mode indication shall be transmitted on the CQICH indexed by the CQICH _ ID every 16 allocated CQICH transmission opportunity . The first indication is sent on the 16 th allocated CQICH transmission opportunity .