Patent ID: 7065148

Claim:
A telecommunications system, comprising: a transmitter having an encoder that implements a multi-state trellis code; and at least two transmission elements coupled to the transmitter, wherein, during operation, the encoder: receives a group of input data bits, selects an orthogonal space-time block code of a form C ⁡ ( x 1 , x 2 , θ ) = ( x 1 ⁢ ⅇ jθ x 2 - x 2 * ⁢ ⅇ jθ x 1 * ) from a set of space-time block codes, based on the group of input bits and a state of the encoder, selects at least two modulation symbols, one symbol for each of the at least two transmission elements, based on the group of input bits and the state of the encoder, wherein X 1 and X 2 represent modulation symbols, and θ represents a code selection parameter, and encodes the group of input data bits, using the orthogonal space-time block code and the at least two modulation symbols, for transmission by the at least two transmission elements.