Patent ID: 7050510

Claim:
A method for use in a transmitter adapted to employ four transmit elements to transmit a source bit stream, the method comprising the steps of: dividing said source bit stream into L data substreams, L>2; and grouping derivatives of symbols derived from each of said data substreams to form four transmit time sequences, one sequence for each transmit element, said derivatives of said symbols are members of the group consisting of: a negative of one of said symbols, a negative of a complex conjugate of one of said symbols, one of said symbols, a symbol developed by encoding at least one sample of at least one of said data substreams, and an unencoded sample of at least one of said data substreams; wherein each of said time sequences spans L symbol periods and includes at least one derivative of at least one symbol from each of said L data substreams; and at least one of said derivatives of said symbols is a complex conjugate of one of said symbols.