Method for global digital broadcasting based on differential amplitude and phase combining modulation |
Title: |
Method for global digital broadcasting based on differential amplitude and phase combining modulation |
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Application Number: |
200410073823 |
Application Date: |
2004/09/03 |
Announcement Date: |
2005/05/11 |
Pub. Date: |
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Publication Number: |
1614964 |
Announcement Number: |
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Grant Date: |
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Granted Pub. Date: |
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ApplicationType: |
Invention |
State/Country: |
11[China|beijing] |
IPC: |
H04L 27/32 |
Applicant(s): |
Tsinghua Univ. |
Inventor(s): |
Xu Shuzheng, Yang Huazhong |
Key Words: |
global digital broadcasting, differential amplitude, phase, combining modulation |
Abstract: |
The method includes following steps: at transmitting terminal the inputted message packets are made differential phase and differential amplitude modulation to hide the message needing to transmit in phase difference and amplitude relative ratio of front and aft symbol; at receiving terminal the ratio of front and aft symbol is used to extract the message of amplitude ratio and phase difference that is made differential demodulation and recovers transmitted message. |
Claim: |
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Priority: |
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PCT: |
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