发明授权
- 专利标题： Method of and apparatus for implementing adaptive downstream modulation in a fixed wireless communication system
- 专利标题（中）： 在固定无线通信系统中实现自适应下行调制的方法和装置
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申请号： US10003861申请日： 2001-11-02
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公开(公告)号： US06898418B2公开(公告)日： 2005-05-24
- 发明人: Dennis Rauschmayer
- 申请人： Dennis Rauschmayer
- 申请人地址： US TX Dallas
- 专利权人： Texas Instruments Incorporated
- 当前专利权人： Texas Instruments Incorporated
- 当前专利权人地址： US TX Dallas
- 代理商 Abdul Zindani; W. James Brady, III; Frederick J. Telecky, Jr.
- 主分类号： H04L1/00
- IPC分类号： H04L1/00 ; H04L1/18 ; H04L1/20 ; H04W84/14 ; H04B1/00
摘要：
Available quadrature amplitude modulation (“QAM”) carriers transmittable by a base station to customer sites are substantially equally divided among the sites according to the expected quality of reception. ARQ transmissions from the sites are monitored as a measure of the quality of signals received by the sites. If the quality of received signals is unacceptable, the affected site is re-assigned to a higher quality QAM. In addition, if the quality of received signals is too high, the affected site is re-assigned to a lower quality QAM.