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[PDF] Top 20 An approximately MAI-free multiaccess OFDM system in carrier frequency offset environment

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An approximately MAI-free multiaccess OFDM system in carrier frequency offset environment

An approximately MAI-free multiaccess OFDM system in carrier frequency offset environment

... Code in the Uplink Transmission In the uplink transmission, it is difficult to guarantee that every user transmits his/her signal ...used in the uplink transmission in conventional CDMA sys- ... See full document

15

An approximately MAI-Free multiaccess OFDM system in fast time-varying channels

An approximately MAI-Free multiaccess OFDM system in fast time-varying channels

... is MAI-free if time or frequency asynchronism is ...OFDMA in the Doppler environment with the maximum normalized Doppler frequency ranging from to , corresponding to a mobile ... See full document

13

Simplified Multiaccess Interference Reduction for MC-CDMA With Carrier Frequency Offsets

Simplified Multiaccess Interference Reduction for MC-CDMA With Carrier Frequency Offsets

... CDMA system model is reviewed, and the CFO-induced MAI is derived in Section ...their MAI-free properties are proved in Section ...analyzed in Section ...CFO in ... See full document

13

Estimation of carrier frequency offset with I/Q mismatch using pseudo offset injection in OFDM systems

Estimation of carrier frequency offset with I/Q mismatch using pseudo offset injection in OFDM systems

... typical OFDM system based on IEEE ...employed in the simulation platform were OFDM symbol length 64 and cyclic prefix ...the frequency offset under IQ-M conditions. In ... See full document

10

Maximum Likelihood Timing and Carrier Frequency Offset Estimation for OFDM Systems With Periodic Preambles

Maximum Likelihood Timing and Carrier Frequency Offset Estimation for OFDM Systems With Periodic Preambles

... network system, which features a ten-period ...function. In addi- tion to the standard calculations, this method requires an extra procedure to solve the roots of a polynomial function, which is ... See full document

14

Iterative ML estimation for frequency offset and time synchronization in OFDM systems

Iterative ML estimation for frequency offset and time synchronization in OFDM systems

... According to the proposed iterative approaching algorithm, the global maximum of log-likelihood function can be definitely found to achieve both frequency and time synchronization[r] ... See full document

6

Blind recursive tracking of carrier frequency offset (CFO) vector in MC-CDMA systems

Blind recursive tracking of carrier frequency offset (CFO) vector in MC-CDMA systems

... power in dealing with a broad range of estimation problems with incomplete observations [12], ...the carrier phase was considered in [14] with the transmitted symbol being treated as the missing ... See full document

10

Pilot-assisted maximum-likelihood frequency-offset estimation for OFDM systems

Pilot-assisted maximum-likelihood frequency-offset estimation for OFDM systems

... Doppler frequency of approximately 463 Hz when the carrier frequency is 5 GHz, we plot the corresponding MSE performance in ...valid. In sum- mary, Algorithms and and the MTB ... See full document

12

Blind Maximum-Likelihood Carrier-Frequency-Offset Estimation for Interleaved OFDMA Uplink Systems

Blind Maximum-Likelihood Carrier-Frequency-Offset Estimation for Interleaved OFDMA Uplink Systems

... shown in Fig. 1, a large EVS will be induced in the full-loaded scenario (Δq = 1), and the perfor- mance of the proposed method will seriously be ...by an expectation-maximization (EM) algorithm ... See full document

14

Joint weighted least squares estimation of frequency and timing offset for OFDM systems over fading channels

Joint weighted least squares estimation of frequency and timing offset for OFDM systems over fading channels

... The carrier frequency offset can he estimated by first calculating the pilot-suhcarrier phase difference between two OFDM symbols, removing the quantity contributed by the [r] ... See full document

5

A low-complexity frame synchronization and frequency offset compensation scheme for OFDM systems over fading channels

A low-complexity frame synchronization and frequency offset compensation scheme for OFDM systems over fading channels

... Residual Frequency Tracking Error In the acquisition stage, we assume that the residual fre- quency error after the frequency tracking stage is an integral multiple of the subcarrier ... See full document

14

Precoded multiuser OFDM transceiver in timing asynchronous environment

Precoded multiuser OFDM transceiver in timing asynchronous environment

... Multiuser OFDM Transceiver in Timing Asynchronous Environment Shang-Ho Tsai, Yuan-Pei Lin, and ...orthogonal frequency-division multiplexing (OFDM) transceiver, called the precoded ... See full document

4

Spectrally efficient polarization multiplexed direct-detection OFDM system without frequency gap

Spectrally efficient polarization multiplexed direct-detection OFDM system without frequency gap

... the frequency gap further improves the spectral efficiency of the OFDM ...The frequency gap between a reference carrier and OFDM subcarriers avoids subcarrier-to-subcarrier beating ... See full document

6

Saturation of the free carrier absorption in ZnTe crystals

Saturation of the free carrier absorption in ZnTe crystals

... indicates an increase in the number of free carriers, which causes a change in the refractive index in the THz ...delay in the THz temporal waveforms, the quadratic increase ... See full document

8

Subharmonic direct frequency synthesizer for mode-1 MB-OFDM UWB system

Subharmonic direct frequency synthesizer for mode-1 MB-OFDM UWB system

... the frequency of the current inputs from the sources toward twice their input frequency from the ...quads in a certain polarity and injecting them into the loads, the single side-band ... See full document

4

An iterative maximum SINR receiver for multicarrier CDMA systems over a multipath fading channel with frequency offset

An iterative maximum SINR receiver for multicarrier CDMA systems over a multipath fading channel with frequency offset

... and MAI suppression, and pilot symbols assisted frequency offset estimation, channel vector estimation and RAKE combining give the desired signal ...subtraction in the lower branch, the ... See full document

10

Novel sampling clock offset estimation for DVB-T OFDM

Novel sampling clock offset estimation for DVB-T OFDM

... clock offset estimation and compensation are important problems in an OFDM ...clock offset can cause a severe drift in symbol-timing, thus causing inter-carrier and ... See full document

5

An Intelligent System for Mining Usage Patterns from Appliance Data in Smart Home Environment

An Intelligent System for Mining Usage Patterns from Appliance Data in Smart Home Environment

... saving. In this paper, we develop an intelligent system which analyzes appliance usage to extract users’ behavior patterns in a smart home ...proposed system, users can acquire the ... See full document

4

An approximately global optimization method for assortment problems

An approximately global optimization method for assortment problems

... Although Chen et al.'s model is quite promising to find solutions, there are two inadequacies in their model: firstly, the objective function in their model is a polynomial term, w[r] ... See full document

9

A new family of measurement technique for tracking voltage phasor, local system frequency, harmonics and DC offset

A new family of measurement technique for tracking voltage phasor, local system frequency, harmonics and DC offset

... Not only keeps the advantages of DFT but adds new advantages in taking harmonics and DC offset into consideration, combining smoothing windows, and fractianal cyc[r] ... See full document

6

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