carrier frequency
Carrier Frequency Synchronization in OFDM-Downlink LTE Systems
... investigate carrier frequency synchronization in the downlink of 3GPP Long Term Evolution ...complete carrier frequency offset estimation and compensation scheme based on standardized ...
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Development of OFDM based Cooperative Communication System for Mitigation of Effect of Carrier Frequency offset
... of carrier frequency offset on a cooperative Alamouti STC OFDM system is OFDM ICI, a well-studied phenomenon with performance degradation given by (7) and ...and frequency offset knowledge, we can ...
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Impact of Carrier Frequency Offsets on Block IFDMA Systems
... In this paper, the two variants of B-IFDMA, the joint- DFT B-IFDMA and the added-signal B-IFDMA, have been investigated in terms of carrier frequency offset (CFO) sensitivity. CFO gives rise to useful power ...
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Improved OFDM by cancellation carrier frequency offset in GFDM based on multi-carrier modulation for future machine to machine systems
... time- frequency grid, consisting of M sub symbols and K subcarriers, and applies a circular prototype filter for each ...Orthogonal Frequency Division Multiplexing (OFDM) and Single Carrier ...
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Improving the OFDMA Performance with Common Carrier Frequency Offset Correction
... different carrier frequency offsets (CFOs) are possibly raised due to the mismatch of local oscillators and the Doppler effect because of multiple-antenna ...
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SYNCRONIZATION METHOD FOR CARRIER FREQUENCY OFFSET IN OFDM
... the carrier frequency offset, two repetitive training symbols are used and then compare of the phases between the successive identical symbols is a simple, useful technique, which was first proposed in 1994 ...
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Carrier Frequency Offset Estimation for OFDM Systems Using Time/Frequency-Domain Techniques
... to frequency synchronization problem. In this paper focus is on frequency offset, which may be caused by Doppler shift in the channel, or by the difference between the transmitter and receiver local ...
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A reduced complexity scheme for carrier frequency synchronization in uplink 802.16e OFDMA
... Synchronization of the carrier frequency offset (CFO) in the uplink of OFDMA systems is a complex task because each user presents a different CFO. It is performed in two stages: estimation and compensation. ...
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Shared Secret Key Generation via Carrier Frequency Offsets
... Apart from the medium, physical characteristics of the underlying device hardware can also be used for security, e.g., integrated circuits [14], oscillators [15–18], antennas [19], non-reciprocal hardware [20] etc. In ...
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Single Carrier Frequency Domain Equalization with Space Time Trellis Codes
... Orthogonal Frequency Division Multiplexing (OFDM) is readily employed in wireless communication to combat the intersymbol interference (ISI) effect with limited success because as the capacity of MIMO systems ...
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MIMO OFDM Channel Estimation in the Presence of Carrier Frequency Offset
... orthogonal frequency division multiplexing (OFDM) is expected to be a promising ...the carrier frequency offset (CFO) and the channel parameters is a great challenging ...the ...
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Single-Carrier Frequency-Domain Equalizer
... single-carrier frequency-domain equalizers (SC-FDE) in frequency selective channels, and uncovers the interplay between diversity gain 𝑑 , channel memory length 𝜈 , transmission block length 𝐿 , and ...
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A NOVEL RANDOM CARRIER FREQUENCY MODULATION TECHNIQUE FOR DRIVE APPLICATIONS
... switching frequency for three-phase power converters has familiarized by ...sampling frequency and the average inductor current constant Harmonics is decreased with constant average inductor current and ...
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Iterative Cancellation Of Non-Linear Distortion Noise In Digital Communication Systems
... An inverse FFT is computed on each set of symbols, giving a set of complex time-domain samples. These samples are then quadrature- mixed to passband in the standard way. The real and imaginary components are first ...
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An Active PWM Technique For A Transformer less H-Bridge Cascaded STATCOM With Wye Configuration
... the carrier phase-shifted sinusoidal PWM (abbreviated as CPS-SPWM) with the carrier frequency of 1 ...cluster,12 carrier signals with the same frequency as 1 kHz are phase shifted by ...
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Frequency Offset Compensation In OFDM System Using Neural Network
... Orthogonal Frequency Division Multiplexing (OFDM) finds various applications in wireless ...the carrier frequency offset (CFO) in the orthogonal frequency division multiplexing (OFDM) systems ...
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ICI Mitigation Techniques in OFDM System: A Review
... - Carrier frequency offset, phase noise, timing offset and Doppler spread due to frequency error causes Inter Carrier Interference, which degrades the performance of Orthogonal ...
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Low PAPR space frequency block coding for multiuser MIMO SC-FDMA systems: specific issues for users with different spectral allocations
... While the PAPR problem, inevitable in the downlink, can be coped with by using highly linear (and thus expensive) HPAs for example, this is a much more sen- sitive issue in the uplink. Mobile users strive for good ...
10
Fourier Transform And Its Application In Modulation Techniques
... new frequency spectrum appears, consisting of two sidebands, known as the upper sideband (USB), and the lower sideband ...original carrier, but is still centered about the carrier frequency ...
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Development and characterization of an acousto-optic modulator
... RF carrier frequency oscillator, a balanced diode RF mixer for impressing an electronic video signal onto the carrier and a wide band power amplifier to drive the AOM at peak diffraction efficiency ...
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