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    • 9. 发明申请
    • METHOD AND APPARATUS FOR SPECTRALLY EFFICIENT LINK ADAPTATION USING HARQ IN OFDMA SYSTEMS
    • 在OFDMA系统中使用HARQ的频谱效率链路适配的方法和装置
    • WO2009134747A1
    • 2009-11-05
    • PCT/US2009/041899
    • 2009-04-28
    • NORTEL NETWORKS LIMITEDNAMMI, SairameshVENKATRAMAN, ShankarCHHEDA, Ashvin
    • NAMMI, SairameshVENKATRAMAN, ShankarCHHEDA, Ashvin
    • H04L12/26
    • H04W72/04H04B7/024H04B7/0452H04J11/005H04L5/0023H04L5/0037
    • A method increases spectral efficiency in a communication system. The communication system includes at least one mobile station and is capable of transmitting messages encoded according to a plurality of available modulation coding schemes ("MCSs"). Each available MCS includes a modulation scheme and an effective coding rate. The MCSs are indexed according to increasing complexity. A signal-to-interference ratio ("SINR") is determined which is sufficient to satisfy a predetermined frame error rate ("FER"). A first MCS and a corresponding amount of transmissions needed to satisfy the predetermined FER at the SINR using the first MCS are determined. The first MCS has a higher effective coding rate than a second MCS. The second MCS sufficiently satisfies the predetermined FER at the SINR in a single transmission. A message encoded according to the first MCS is transmitted through the communication system using hybrid automatic repeat request ("HARQ")
    • 一种方法提高了通信系统中的频谱效率。 通信系统包括至少一个移动站,并且能够发送根据多个可用调制编码方案(“MCS”)编码的消息。 每个可用的MCS包括调制方案和有效的编码率。 MCS随着复杂性的增加而被索引。 确定信号干扰比(“SINR”),其足以满足预定的帧错误率(“FER”)。 确定使用第一MCS在SINR处满足预定FER所需的第一MCS和相应的传输量。 第一MCS具有比第二MCS更高的有效编码率。 第二MCS在单个传输中足够满足SINR下的预定FER。 根据第一MCS编码的消息通过使用混合自动重传请求(“HARQ”)的通信系统被发送,