[PDF] Top 20 Pilot-assisted maximum-likelihood frequency-offset estimation for OFDM systems

... channel’s maximum delay spread is shorter than the length of the cyclic ...Doppler frequency of approximately 463 Hz when the carrier frequency is 5 GHz, we plot the corresponding MSE performance in ... See full document

... a maximum likelihood (ML) CFO estimation method for such ...disadvantageous for real-world ...the likelihood function directly and thereby perform CFO ...need for the ... See full document

... very high. The distinct feature of the proposed algorithm is that it only requires a root-searching procedure. The main idea is to use a series expansion when evaluating the ML function. The performance of the expansion ... See full document

... 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

... accurate estimation of the frequency offset is ...approaches for the frequency-offset estimation using the pre- amble data [6], [7], the cyclic prefix data [8], [9], or the ... See full document

... 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

... aided frequency offset estimation algorithms based on maximum likelihood ...the frequency offset, but also possess the maximum acquisition range of a discrete time ... See full document

... and pilot symbols assisted frequency offset estimation, channel vector estimation and RAKE combining give the desired signal ...presented for a multiuser ...large ... See full document

... RMS frequency error as a function of SNR. maximum-likelihood frequency estimator is also improved by extending the observation ...low-complexity frequency detector is the quantization ... See full document

... 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 ...were OFDM symbol length 64 and cyclic prefix ...symbols ... See full document

... 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

... 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

... differential OFDM systems with diversity re- ...expression for differential OFDM systems employing the CR with diversity reception in the time-varying multipath Rayleigh fading ... See full document

... Channel Estimation for OFDM Systems With Power–Delay Profile Approximation Kun-Chien Hung and David ...channel estimation for multicarrier systems, one needs to know the ... See full document

... 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 inter-OFDM-symbol ... See full document

... methods for analyzing such data critically rely on the assumption that the truncation variable is quasi-independent of the variable of ...a likelihood-based inference approach under the assumption that the ... See full document

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

... neither the log-likelihood nor the total variation require knowledge of the ideal image, the combination of both can be used also in the evaluation of the SPECT reconstruction. Figure 3 shows plots of both figures ... See full document

... neither the log-likelihood nor the total variation require knowledge of the ideal image, the combination of both can be used also in the evaluation of the SPECT reconstruction. Figure 3 shows plots of both figures ... See full document

... algorithm for systems us- ing four short training symbols; true CFO = ...the frequency estimator’s MSE performance when the SNR for each receive antenna is assumed to be per- fectly ...both ... See full document