Invention Application
- Patent Title: Adaptive coding and modulation
- Patent Title (中): 自适应编码和调制
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Application No.: US10161913Application Date: 2002-06-04
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Publication No.: US20020183020A1Publication Date: 2002-12-05
- Inventor: Peiying Zhu , Wen Tong , Claude C. Royer
- Applicant: Nortel Networks Limited
- Applicant Address: CA St. Laurent
- Assignee: Nortel Networks Limited
- Current Assignee: Nortel Networks Limited
- Current Assignee Address: CA St. Laurent
- Main IPC: H04B001/02
- IPC: H04B001/02

Abstract:
The present invention provides a unique feedback system in a wireless communication system wherein the transmission channel is always overloaded with data, which is configured and modulated at a select order of modulation. Based on the channel conditions, only a portion of the data can be successfully received. As such, the receiver will attempt to receive the data using demodulation techniques corresponding to the different levels of modulation used to encode the data transmitted. The receiver will determine the data that is recovered, or the highest order of modulation at which the data is recovered, and provide feedback to the transmitter. The transmitter will then retransmit the data that was not properly received. By overloading the channel at all times, the maximum amount of data capable of being transmitted over the channel is optimized without requiring or heavily relying on the receiver feeding back channel condition information to the transmitter.
Public/Granted literature
- US07043210B2 Adaptive coding and modulation Public/Granted day:2006-05-09
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