Patent ID: 7751490

Claim:
A method of establishing a synchronization signal for transmission in a communication system, the method comprising: defining a set of discrete Fourier frequency coefficients, transforming the set of discrete Fourier frequency coefficients into a discrete time representation, and using the discrete time representation as the synchronization signal in the communication system, wherein the set of discrete Fourier frequency coefficients represents a mapping of a centrally symmetric number sequence onto discrete Fourier frequency coefficients, and the centrally symmetric number sequence, d u [n], is obtained by puncturing a central element of a Zadoff-Chu sequence of odd length L+1, so that d u [n] is given by d u ⁡ [ n ] = { W L + 1 un ⁡ ( n + 1 ) / 2 , n = 0 , 1 , … ⁢ , L / 2 - 1 W L + 1 u ⁡ ( n + 1 ) ⁢ ( n + 2 ) / 2 , n = L / 2 , … ⁢ , L - 1 where W N =exp(−j2π/N), for positive integer N.