Invention Grant
- Patent Title: D-PSK demodulation based on correlation angle distribution
- Patent Title (中): 基于相关角分布的D-PSK解调
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Application No.: US12212299Application Date: 2008-09-17
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Publication No.: US08208585B2Publication Date: 2012-06-26
- Inventor: Yihong Qi , Azzedine Touzni
- Applicant: Yihong Qi , Azzedine Touzni
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Charles Chesney
- Main IPC: H04L27/00
- IPC: H04L27/00 ; H03D3/22 ; H03M13/00

Abstract:
An apparatus and method is described that provides optimal D-PSK demodulation based on the distribution of phase differences between successive D-PSK symbols. A plurality of D-PSK data symbols are received, and each symbol is characterized by a real component and an imaginary component. An angle of correlation between any two successive symbols is calculated. A variance of correlation angles is obtained by using data symbols or pilot symbols, if available. The probability of the correlation angle being each of possible phase difference according the D-PSK constellation is then determined. From the probabilities of the particular correlation angle, a probability of each input bit being a “0” or “1” is determined.
Public/Granted literature
- US20100067618A1 D-PSK Demodulation Based On Correlation Angle Distribution Public/Granted day:2010-03-18
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