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The high dynamic range of OFDM signals imposes the use of linear amplifiers (class A and class AB).
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The requirement of linear amplifiers, with a poor power duty, creates a problem accentuated by the use of multiple antennas.
To achieve similar low-distortion performance of linear amplifiers but with a higher power efficiency, and hence smaller size and cost, the recent research has been focused on switching amplifiers.
A wide variety of sensors are used in digital control systems, and interfacing them requires a good understanding of linear amplifier design and signal conditioning techniques.
As discussed in [1] there are high-end products for professional applications, using linear amplifiers, with THD figures below 0.001%; however the subjective sensitivity of the hearing human system to THD levels below 0.3% is often negligible.
Data were collected using linear amplifiers for forward and side scatter and logarithmic amplifiers for FL1 and FL4.
Data were collected using linear amplifiers for forward and side scatter and logarithmic amplifiers for FL1, FL2 and FL4.
A significant drawback of the OFDM-based system is its high Peak-to-Average Power Ratio (PAPR) at the transmitter, requiring the use of a highly linear amplifier which leads to low power efficiency [1].
A significant drawback of orthogonal frequency division multiplexing (OFDM -based systems is their high peak-tOFDM -basedower ratio (PAPR) at the transystems, requising theirse of a highly linear amplifier which leads to low power efficiency.
Along with the resurgent use of parametric amplifiers as applied to quantum systems, a quantum optics formalism is also typically adopted to explain the amplifier.
It is also shown that the N-way Doherty amplifier can be used as a highly linear amplifier by tuning the multiple cells for accurate harmonic cancellation.
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