| 摘要 |
<p>#CMT# #/CMT# The method involves applying differential processing on samples (530) at output of a matched filter, where differential processing supplies differential values obtained as Hermitian product of samples from a series. The differential values are iteratively decoded (540) to obtain content of a shift register of a generator of a sequence representing a sum of two offset versions of a scrambling code. Content of the shift register of the scrambling code generator at a given instant is determined (550) using the content of the shift register of the generator of the sequence. #CMT#USE : #/CMT# Method for estimating a scrambling code used on an uplink of a code division multiple access (CDMA) 2000 macrocell system. #CMT#ADVANTAGE : #/CMT# The method enables estimating the scrambling code and a spreading code of a terminal, so that a receiver of a base station can estimate symbols emitted by the terminal to regenerate contribution to the received signal output from the terminal using the scrambling code, the spreading code, a shaping filter and a pulse response of a channel, where the contribution is subtracted from the received signal so as to eliminate interference due to the terminal in the CDMA 2000 system. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a flowchart illustrating a method for estimating a scrambling code. '(Drawing includes non-English language text)' 510 : Step for sampling signal received by receiver 520 : Step for filtering sampled signal 530 : Step for applying differential processing on samples 540 : Step for iteratively decoding differential values 550 : Step for determining content of shift register of scrambling code generator at given instant.</p> |
