发明名称 |
Adaptive soft demodulation for reception of distorted signals |
摘要 |
A satellite communications system comprises a transmitting ground station, including a transmitter and a receiver, a satellite transponder and a receiving ground station. The transmitter transmits an uplink signal to the satellite transponder, which broadcasts the received uplink signal as a downlink signal to the receiving ground station. The transmitting ground station monitors the downlink signal through the receiver and calculates log-likelihood ratios (LLRs) as a function of the monitored downlink signal. These LLRs are illustratively stored in a look-up table, which are then transmitted to the receiving ground station for use in recovering data from a received data signal.
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申请公布号 |
US2006212776(A1) |
申请公布日期 |
2006.09.21 |
申请号 |
US20050554580 |
申请日期 |
2005.10.27 |
申请人 |
KOSLOV JOSHUA L;RAMASWAMY KUMAR;GAO WEN |
发明人 |
KOSLOV JOSHUA L.;RAMASWAMY KUMAR;GAO WEN |
分类号 |
H03M13/00;H04B7/185;H04L1/00 |
主分类号 |
H03M13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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