| 摘要 |
Process for computing an estimation of the frequency offset in a receiver for a UMTS communication network said receiver receives the signal transmitted by two antennas and including two Common Pllot CHannels (CPICH), said process involving the steps of separating the two signals by means of the computation of r NoTxd k = r k + r �¢ k + 2 = 1 + j �¢ S 1 k + - 1 ŒŠ k + 1 2 Œ‹ �¢ D 2 k + N s k r Txd k = - 1 ŒŠ k + 1 2 Œ‹ �¢ r k - r �¢ k + 2 = 1 + j �¢ S 2 k + - 1 ŒŠ k + 1 2 Œ‹ �¢ D 1 k + - 1 ŒŠ k + 1 2 Œ‹ �¢ N d k
Where for m = 1,2 S m k = h m �¢ exp j �¢ Õ 0 �¢ exp jk �¢ ¦ + exp j �¢ k + 2 �¢ ¦ , D m 2 �¢ k = h m �¢ exp j �¢ Õ 0 �¢ exp jk �¢ ¦ - exp j �¢ k + 2 �¢ ¦ N s k = n k + n �¢ k + 2 N d k = n k - n �¢ k + 2 h m corresponding to the channel response for antenna m ( m=1, 2 ) ,
j corresponding to the imaginary complex such as j 2 = -1 and ¦ = 2 À ” f T .
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