Frequency Offset
Time Synchronization Algorithm for Wireless Sensor Networks Based on Frequency Offset Estimation
... clock frequency recovery in wireless sensor ...clock frequency offset for time synchronization based on wireless sen- sor ...carrier frequency offset estimation algorithm for ofdm ...
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Frequency Offset Compensation In OFDM System Using Neural Network
... term frequency offset refers to a non-zero carrier frequency seen at baseband in the ...as frequency drift caused by Doppler ...carrier frequency prior to ...carrier frequency ...
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TWO APPROACHES ON CARRIER FREQUENCY OFFSET ESTIMATION IN MIMO OFDM SYSTEMS
... In this paper, we proposed a novel iterative carrier frequency offset estimation algorithm based on the EKF algorithm and multi-antenna channel ML estimation for MIMO-OFDM systems. In the proposed scheme, ...
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Carrier frequency offset estimation method for 2 × 1 MISO TDS OFDM systems
... (TDS)-orthogonal frequency division multiplexing (OFDM) systems, a pseudo noise (PN) sequence is inserted instead of the cyclic ...carrier frequency offset (CFO) ...
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Effects of Diversity Combining Techniques and Carrier Frequency Offset on Enhancement of BER in Mobile Networks
... Fading is a fundamental problem in wireless communication. However Space time block code scheme is suggested to overcome this problem. In the paper various combination of transmit and receive antenna was considered, a ...
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LTESS-track: A Precise and Fast Frequency Offset Estimation for low-cost SDR Platforms
... LO frequency offset evaluation method that relies on the Synchro- nization Signals (SS) transmitted by LTE base stations as ...for frequency offset estimation and show that our method can ...
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OFDMA Uplink Frequency Offset Estimation with Multi Access Interference Mitigation
... UL frequency offset esti- mation and showed that the performance improvement in estimation benefits from MAI elimination/reduction re- sults in improved estimation ...residual frequency offsets), a ...
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DESIGN AND IMPLEMENTATION PEAK POWER OFDM TRANSMITTERS WITH RANDOM RESIDUALS FREQUENCY OFFSET
... in frequency at the transmitter and receiver, usually denoted as frequency ...This frequency offset is due to Doppler shift causes relative motion between the transmitter and receiver, or by ...
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RF-Pilot Based Frequency Offset Estimation and Phase Noise Compensation for CO-OFDM Systems
... orthogonal frequency-division multiplexing (CO-OFDM) ...carrier frequency offset (CFO). An effective frequency offset estimation (FOE) is thus required to implement before performing ...
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Low-complexity high-performance GFSK receiver with carrier frequency offset correction
... This paper presents an implementation of a GFSK receiver based on matched Þ ltering of a sequence of successive bits. This en- ables improved detection and superior BER performance but re- quires matched Þ lters of ...
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Exact BER Analysis of OFDM Systems Communicating over Frequency Selective Fading Channels Subjected to Carrier Frequency Offset
... Orthogonal Frequency Division Multiplexing (OFDM) has been employed in numerous wireless ...Carrier Frequency Offset (CFO) and the Phase Estimation Error ...of frequency- selective Nakagami-m ...
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Development of OFDM based Cooperative Communication System for Mitigation of Effect of Carrier Frequency offset
... no frequency offset, the SISO and STC curves are the same and agree with the standard QAM BER formula [4, Eqn ...a frequency error of 1% of the sub-carrier spacing and equal STC branch power, we ...
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Fine Frequency Offset based Section Synchronization in Cognitive Radio Systems
... contiguous frequency bands [8] [9] ...establish frequency synchronization without the spectrum synchronization information ...carrier frequency offset CFO estimation in OFDM systems has been ...
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Compressive sensing based joint frequency offset and channel estimation for OFDM
... We consider joint estimation of carrier frequency offset (CFO) and channel impulse response (CIR) for orthogonal frequency division multiplexing (OFDM) with pilot symbols. A new method based on ...
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Efficient integer frequency offset estimation architecture for enhanced OFDM synchronization
... orthogonal frequency-division multiplexing (OFDM) systems, integer frequency offset (IFO) causes a circular shift of the sub-carrier indices in the frequency ...
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Design of a Broadband Frequency Offset Van Atta Array
... little frequency offset which is achieved by mixer is introduced in the Van Atta ...retransmitting frequency is lower than the receiving frequency, the beam pointing error caused by the polar ...
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A Simple Carrier Frequency Offset Synchronization Strategy for Multiple Relay Cooperative Diversity OFDM System
... timing offset (TO) results in phase shift in FD channel that is conveniently addressed by channel ...inaccurate frequency synchronization results in residual frequency offset thus making the ...
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Joint frequency offset, time offset, and channel estimation for OFDM/OQAM systems
... orthogonal frequency division multiplexing (OFDM) for future wireless networks, a derivative of OFDM based on offset quadrature amplitude modulation (OFDM/OQAM) has received considerable ...carrier ...
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Carrier Frequency Offset Estimation in Multiuser Simultaneous Channel Access for MIMO OFDM based WLANs
... The precise operating SNR for wireless LAN devices comes in the range 20 to 40 dB over which the CFO estimator presented here performs similar to the estimator used for SISO channels (IEEE 802.11a). The algorithm ...
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SYNCRONIZATION METHOD FOR CARRIER FREQUENCY OFFSET IN OFDM
... in frequency by a constant amount of 2πЄ/N, due to offset ,where Є is frequency offset and N are the ...Fractional frequency offset is limited due to correlation length N is ...
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