Results 111 to 120 of about 275 (168)

Coded pulse excitation for ultrasonic strain imaging. [PDF]

open access: yesIEEE Trans Ultrason Ferroelectr Freq Control, 2005
Liu J, Insana MF.
europepmc   +1 more source

Linear approach to axial resolution in elasticity imaging. [PDF]

open access: yesIEEE Trans Ultrason Ferroelectr Freq Control, 2004
Liu J, Abbey CK, Insana MF.
europepmc   +1 more source

Performance Evaluation of Non linear Companding Transform MIMO-OFDM

open access: yesInternational Journal of Computer Applications, 2014
B. Prabakararao, K. Srinivasarao
openaire   +1 more source

Companding Transform for Reduction in Peak-to-Average Power Ratio of OFDM Signals

open access: yesIEEE Transactions on Wireless Communications, 2004
A general companding transform method is proposed to effectively reduce peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals. By compressing large signals while enhancing small signals along with taking into account their statistical characteristics, this method can achieve significant reduction in PAPR with ...
Junli Zheng
exaly   +4 more sources

A Piecewise Linear Companding Transform for PAPR Reduction of OFDM Signals With Companding Distortion Mitigation

IEEE Transactions on Broadcasting, 2014
Companding is a well-known technique for the peak-to-average power ratio (PAPR) reduction of orthogonal frequency division multiplexing (OFDM) signals. However, as companding transform is an extra operation after the modulation of OFDM signals, companding schemes reduce PAPR at the expense of increasing the bit error rate (BER).
Meixia Hu, Yongzhao Li, Hailin Zhang
exaly   +2 more sources

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