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公开(公告)号:EP2219315A1
公开(公告)日:2010-08-18
申请号:EP10165122.2
申请日:2003-04-24
CPC分类号: H03M13/255 , H03M13/1102 , H04L1/0001 , H04L1/0002 , H04L1/0009 , H04L5/0021 , H04L5/0037 , H04L5/0042 , H04L5/0046 , H04L5/0048 , H04L5/006 , H04L5/0064
摘要: In one embodiment, a method for generating an adaptive air interface waveform includes generating a waveform that includes a variable carrier frequency and variable bandwidth signal. The variable bandwidth signal includes one or more subcarriers that are dynamically placeable over a range of frequencies, and each subcarrier is separately modulated according to a direct sequence (DS) spread spectrum (SS) technique. The waveform has an embedded pilot usable to optimize one or more spectrum efficiencies of the waveform. A modulation constellation, a code rate, and a code length of the generated waveform are adapted according to an available spectrum and one or more sub-carrier conditions.
摘要翻译: 在一个实施例中,用于产生自适应空中接口波形的方法包括生成包括可变载波频率和可变带宽信号的波形。 可变带宽信号包括在频率范围上可动态放置的一个或多个子载波,并且根据直接序列(DS)扩频(SS)技术分别调制每个子载波。 波形具有可用于优化波形的一个或多个频谱效率的嵌入式导频。 根据可用的频谱和一个或多个副载波条件来调整所生成的波形的调制星座,码率和码长。