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[PDF] Top 20 Preamble-Assisted Estimation for Frequency-Dependent I/Q Mismatch in Direct-Conversion OFDM Receivers

Has 10000 "Preamble-Assisted Estimation for Frequency-Dependent I/Q Mismatch in Direct-Conversion OFDM Receivers" found on our website. Below are the top 20 most common "Preamble-Assisted Estimation for Frequency-Dependent I/Q Mismatch in Direct-Conversion OFDM Receivers".

Preamble-Assisted Estimation for Frequency-Dependent I/Q Mismatch in Direct-Conversion OFDM Receivers

Preamble-Assisted Estimation for Frequency-Dependent I/Q Mismatch in Direct-Conversion OFDM Receivers

... practice, frequency-dependent IQ-M and CFO arise ...the frequency-dependent IQ-M with ...the estimation of frequency- dependent IQ-M with ...a ... See full document

7

A 62.8 mW 4x4 MIMO-OFDM Modem with One-Symbol-Locked Timing Recovery, Frequency-Dependent I/Q Mismatch Estimation and Adaptive Equalization

A 62.8 mW 4x4 MIMO-OFDM Modem with One-Symbol-Locked Timing Recovery, Frequency-Dependent I/Q Mismatch Estimation and Adaptive Equalization

... MIMO- OFDM modem and the packet format. In Table 1, key parameters of this system are ...bandwidth. In the transmitter, all the transmit chains uses the same oscillator as well as in the ... See full document

4

A Cost-Effective Preamble-Assisted Engine With Skew Calibrator for Frequency-Dependent I/Q Imbalance in 4 x 4 MIMO-OFDM Modem

A Cost-Effective Preamble-Assisted Engine With Skew Calibrator for Frequency-Dependent I/Q Imbalance in 4 x 4 MIMO-OFDM Modem

... Abstract—Variations in I/Q gains, phases, and filters of the RF frontend, namely frequency-dependent I/Q imbalance (FDI), are an important factor in ... See full document

14

Cross-Validation Estimation for Frequency-Dependent I/Q Imbalance in MIMO-OFDM Receivers

Cross-Validation Estimation for Frequency-Dependent I/Q Imbalance in MIMO-OFDM Receivers

... Manufactured in the United States Abstract The effects of variation in RF, such as I/Q imbalance and filter mismatch, are extremely important for OFDM wireless ... See full document

12

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 802.11g for WLAN was adopted as a reference-design platform to evaluate the per- formance of the proposed ...employed in the simulation platform were OFDM ... See full document

10

Estimation of the Bit Error Rate for Direct-Detected OFDM Signals With Optically Preamplified Receivers

Estimation of the Bit Error Rate for Direct-Detected OFDM Signals With Optically Preamplified Receivers

... gapped OFDM, because all the data subcarriers are located clusterly at the other side far from the dc and would not fall into the “deep noise” region, the signal averagely has a higher ESNR and thus has a better ... See full document

7

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 ...the preamble period, the estimation performance is ... See full document

12

Channel estimation and compensation for preamble-assisted DAPSK transmission in digital mobile radio system

Channel estimation and compensation for preamble-assisted DAPSK transmission in digital mobile radio system

... channel estimation and compensation technique, combining fading estimation and frequency offset estimation, for preamble-assisted differentially encoded amplitude- and ... See full document

11

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

Compensation for I/Q Imbalances and Bias Deviation of the Mach-Zehnder Modulators in Direct-Detected Optical OFDM Systems

Compensation for I/Q Imbalances and Bias Deviation of the Mach-Zehnder Modulators in Direct-Detected Optical OFDM Systems

... the I/Q imbalances and fiber CD coexist in the system, we deliberately introduce some imbalances and transmit the signal in the uncompensated fiber ...distance in the presence of the ... See full document

3

Joint Estimation and Compensation of Transmitter and Receiver Radio Impairments in MIMO-OFDM Receivers

Joint Estimation and Compensation of Transmitter and Receiver Radio Impairments in MIMO-OFDM Receivers

... of estimation and compensation for both the transmitter and re- ceiver radio impairments in the MIMO-OFDM (multiple-input, multiple-output orthogonal frequency-division multiplexing) ... See full document

5

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

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

... shown in Fig.5. Transistors M sw1 −8,I/Q are the subharmonically switching current commutators that boost the frequency of the current inputs from the sources toward twice their input ... See full document

4

Channel estimation for OFDM systems based on comb-type pilot arrangement in frequency selective fading channels

Channel estimation for OFDM systems based on comb-type pilot arrangement in frequency selective fading channels

... The channel transfer function of pilot tones are estimated by using low-rank MMSE estimator, and the channel transfer function of data tones are in- terpolated by piecewise l[r] ... See full document

9

EM-Based Iterative Receivers for OFDM and BICM/OFDM Systems in Doubly Selective Channels

EM-Based Iterative Receivers for OFDM and BICM/OFDM Systems in Doubly Selective Channels

... iterative receivers for OFDM and BICM/OFDM systems in doubly selective chan- ...algorithm for data detection, both receivers use groupwise processing with ICI cancellation ... See full document

11

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

... a preamble with more than two pe- riods is ...CFO estimation method for such ...received preamble using a least squares method and then maximizes the corresponding likelihood ...function. ... See full document

14

A Direct Conversion Merged LNA-I/Q-Mixer With Noise Reduction Using Dual Cross Coupling for WiMAX/WiBro Applications

A Direct Conversion Merged LNA-I/Q-Mixer With Noise Reduction Using Dual Cross Coupling for WiMAX/WiBro Applications

... Abstract—A direct conversion merged low noise amplifier (LNA) and I/Q-mixer with new noise reduction technique is presented in this ...which in turn lowers the noise figure and ... See full document

3

Frequency-domain interpolation-based channel estimation in pilot-aided OFDM systems

Frequency-domain interpolation-based channel estimation in pilot-aided OFDM systems

... With its low hardware complexity and accurate estimation performance, the raised-cosine frequency- domain interpolation channel estimator will find many appli- cations in OFDM co[r] ... See full document

5

A Wide Tuning Range G(m)-C Filter for Multi-Mode CMOS Direct-Conversion Wireless Receivers

A Wide Tuning Range G(m)-C Filter for Multi-Mode CMOS Direct-Conversion Wireless Receivers

... multiplier, direct-conversion receiver, multi-mode, transconductor, wide tuning ...range. I. I NTRODUCTION A S THE LEVEL of integration in RF transceivers in- creases, CMOS ... See full document

10

Microwave-assisted one-pot tandem reactions for direct conversion of primary alcohols and aldehydes to triazines and tetrazoles in aqueous media

Microwave-assisted one-pot tandem reactions for direct conversion of primary alcohols and aldehydes to triazines and tetrazoles in aqueous media

... iodine in ammonia water under microwave irradiation to give the intermediate nitriles, which without isolation underwent [2 + 3] cycloadditions with dicyandiamide and sodium azide to afford high yields of the ... See full document

4

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

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