TY - GEN
T1 - Worst case and expected peak-to-average power ratio for orthonormal systems
AU - Farrell, Brendan
AU - Boche, Holger
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=80052167496&partnerID=8YFLogxK
U2 - 10.1109/icc.2011.5963448
DO - 10.1109/icc.2011.5963448
M3 - Conference contribution
AN - SCOPUS:80052167496
SN - 9781612842332
T3 - IEEE International Conference on Communications
BT - 2011 IEEE International Conference on Communications, ICC 2011
T2 - 2011 IEEE International Conference on Communications, ICC 2011
Y2 - 5 June 2011 through 9 June 2011
ER -