Process of determining an estimate of one or more meters of the second rie in a communication system (determining an estimate of one or more pair-meters of the set in a communication system to estimate the temporal alignment of the communication system) and of establishing the common channel time and frequency and apparatus determine an estimate of one or more meters of a communication system

摘要

A method and apparatus for estimating the parameters of a wireless communication system which includes at least one base station and at least one remote terminal, each of the base stations having m antenna elements, the parameters being one or more of: the time alignment; the frequency offset; and the weight vector for spatial processing. At any stage, some of the parameters may already be estimated. A signal of known characteristics is transmitted and received as m received signals at the antenna elements. A cost function that is related to the at least one or more parameters of the second set is determined using a copy signal determined from samples of the received signals, estimates of one or more parameters, if available, known characteristics of transmitted first signal. The estimate of the parameters to be determined is obtained by minimizing the cost function.