发明名称 |
A dpsk demodulator and method |
摘要 |
There is provided a method and apparatus for demodulating a received hard limited DPSK signal, which may be an intermediate frequency (IF) signal. The apparatus comprises: a digital down converter for generating an in-phase component I and a quadrature component Q of a received signal; at least one decimator for reducing sampling frequency of the received signal; at least one filter for reducing noise outside a required bandwidth; and a differential decoder for performing differential detection of I and Q over a given symbol span. The method comprises the steps of: generating an in-phase component I and a quadrature component Q from a received signal; reducing sampling frequency of the received signal; reducing noise outside a required bandwidth; and performing differential detection of I and Q over a given symbol span.
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申请公布号 |
SG128531(A1) |
申请公布日期 |
2007.01.30 |
申请号 |
SG20050004852 |
申请日期 |
2005.07.06 |
申请人 |
OKI TECHNO CENTRE (SINGAPORE) PTE LTD |
发明人 |
CHANGQING XU;ZHIPING LI;TINGWU WANG;TOMISAWA MASAYUKI |
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