Patent ID: 7965797
Filing Date: 2011-06-21
Classification: H04L

Abstract:
1. 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 wherein N 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.