Patent ID: 7965797

Claim:
A method of generating a reference signal based upon a constant amplitude zero autocorrelation (CAZAC) sequence, the reference signal to be transmitted on a wireless communication channel between a user equipment and a base station within a cellular communication network, the method comprising: iteratively calculating, using a processor, elements of the CAZAC sequence according to a CAZAC sequence formula until a number of iterations has reached a predetermined iteration value determined in accordance with a number of subcarriers associated with the channel and equal to N ZC RS - 1 2 + 1 , wherein N ZC RS is a prime number that is less than the number of subcarriers associated with the channel; obtaining values of particular elements of the CAZAC sequence from a table of stored values at predetermined reset iteration values in order to limit error propagation assigning a further number of elements of the CAZAC to be equal to symmetric elements of the iteratively calculated elements; and generating the reference signal based upon the elements of the CAZAC sequence.