Worst Case and Expected Peak-to-Average Power Ratio for Orthonormal Systems

被引:0
|
作者
Farrell, Brendan [1 ]
Boche, Holger [1 ]
机构
[1] Tech Univ Munich, Lehrstuhl Theoret Informat Tech, D-80333 Munich, Germany
关键词
SPHEROIDAL WAVE-FUNCTIONS; FOURIER-ANALYSIS; UNCERTAINTY;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We present several results that show, according to several criteria, that the large peaks that occur in OFDM are common to all orthonormal systems that are uniformly bounded. In particular, worst case peak-to-average values are always at least the square-root of the number of signals, and the expected peak value of a signal always increases logarithmically with the number of signals. The same growth also occurs for single-user signals with the appropriate normalization. Further, we investigate peak-to-average power properties of the prolate spheroidal wave functions and the Walsh functions, which are used in DS-CDMA.
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页数:5
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