Patent ID: 8243581

Claim:
A method of transmitting a channel quality indicator (CQI) in a wireless communication system, the method comprising: measuring a CQI; modulating the CQI to modulation symbols, the CQI corresponding to a plurality of vector indices, each vector index indicating a vector including a plurality of modulation symbols, each modulation symbol being assigned to one subcarrier in a fast feedback channel; shifting a phase of the CQI by multiplying a phase shift value to each modulation symbol so that the CQI is multiplexed with a radio resource allocation request; and transmitting the phase-shifted CQI on the fast feedback channel, wherein each modulation symbol is one of P0, P1, P2, and P3 in the equation below: P ⁢ ⁢ 0 = exp ⁡ ( j · π 4 ) P ⁢ ⁢ 1 = exp ⁡ ( j · 3 ⁢ π 4 ) P ⁢ ⁢ 2 = exp ⁡ ( - j · 3 ⁢ π 4 ) P ⁢ ⁢ 3 = exp ⁡ ( - j · π 4 ) , and wherein the phase-shifted CQI is represented by the equation below: P0 ps =P0e jθ , P1 ps =P1e jθ , P2 ps =P2e jθ , P3 ps =P3e jθ , where θ is the phase shift value.