Patent ID: 8873458

Claim:
A reception method performed by a receiver in a cooperative diversity system including one or more relays, the method comprising: estimating one or more channels between the receiver and the one or more relays; determining power levels for the one or more relays based on the one or more estimated channels; allocating the determined power levels to the one or more relays; receiving at least one signal transmitted from the one or more relays according to the determined power levels; detecting one or more signals from the received at least one signal; deinterleaving each of the detected signals to generate a deinterleaved signal; and decoding the deinterleaved signal, wherein each of the detected signals is obtained by the following equation: e ESE ⁡ ( x k ⁡ ( j ) ) = 2 ⁢ p k ⁢  h k , d  2 ⁢ Re ⁡ ( h k , d * ⁢ y d ⁡ ( j ) ) - E ⁡ [ Re ⁡ ( h k , d * ⁢ ζ k ⁡ ( j ) ) ] V ⁡ [ Re ⁡ ( h k , d * ⁢ ζ k ⁡ ( j ) ) ] where x k (j) indicates a signal transmitted from a k-th relay of the one or more relays, e ESE (x k (j)) indicates a k-th detected signal, y d (j) indicates the at least one signal received by the receiver, h k — d indicates a channel coefficient of an estimated channel between the k-th relay and the receiver, p k indicates a power level allocated to the k-th relay, ζ k (j) indicates a distortion to the signal transmitted from the k-th relay, Re( ) indicates a real part, E[ ] indicates an average, V[ ] indicates a variance, * indicates a complex conjugate operation, ∥ indicates an absolute value.