Patent ID: 8290083

Claim:
A method for transmitting a training sequence, the method comprising: generating a training sequence in a quadrature modulation transmitter, the training sequence representing at least three symbols, symbols A, B, and C, each symbol representing a complex value having an in-phase component value and a quadrature component value, the at least three symbols having uniform power accumulation in a complex plane and being arranged at varying positions in the complex plane such that the symbols A, B, and C are located at varying angular locations in the complex plane, wherein one of the symbols A, B, and C has a zero value for the in-phase component value or the quadrature component value and wherein the sum of the squares of the in-phase component values of the at least three symbols is equal to the sum of the squares of the quadrature component values of the at least three symbols; and transmitting the training sequence.