[PDF] Top 20 An Iterative Maximum Likelihood Synchronization Method for OFDM System

... a Maximum Likelihood (ML) method via adopting the correlation properties of the Cyclic Prefix (CP) with the copied portion of an OFDM symbol to achieve the time and frequency synchroniza- ... See full document

... timing synchronization and frequency ...existing maximum likelihood-based schemes, which causes large errors in one of the estimates of ...the maximum likelihood-based greedy search ... See full document

... the maximum delay spread of the channel is generally used with OFDM to preserve the ...CP- OFDM, which is now present at the physical layer of many transmission standards such as ADSL or ...Firstly, ... See full document

... Several methods have been proposed to estimate the channel in the presence of interference. In [5], channel estimation is investigated for OFDM systems in the pres- ence of synchronous interference. However, in ... See full document

... different iterative estimation methods have been proposed [2] ...the maximum likelihood estimation of the parameter vector of a multinomial distribution modelling crash ... See full document

... In the present paper we are concerned with the joint esti- mation of all synchronization parameters for a burst-mode satellite system operating over AWGN channels. Since one distinct feature of packetized ... See full document

... to provide soft outputs. How to use the soft outputs to obtain the ML solution deserves further investigations. As mentioned, the LINC operation can be seen as a cod- ing process. How to calculate its soft outputs and ... See full document

... for OFDM systems based on repeated OFDM data symbols or repeated short pseudo noise ...sequences. Synchronization based on PN-sequence preambles of- fered greater power reductions in stand-by model ... See full document

... The maximum likelihood (ML) estimation method has been shown as the most effective way to estimate the navigation bit boundary locations ...bit synchronization) and subsequently estimate the ... See full document

... Time synchronization error effect the performance of OFDM receiver and Carrier frequency synchronization is critical to the quality of signal reception in OFDM ...time synchronization ... See full document

... sequence. Iterative methods avoid this computationally prohibitive exhaustive search by only considering a few selected candidates among all the possi- ble ...ILSP method for OFDM systems implicitly ... See full document

... composite likelihood on panel of BL-GARCH (1, 2) model, and study the asymptotic behavior of the estimators, like the consistency property and the asymptotic ... See full document

... The Maximum Likelihood method estimates the parameter values of a statistical model that maximizes the corresponding likelihood function, given the sample ...the Maximum Likelih- ood ... See full document

... Whittle’s likelihood function, the periodogram bias is non- negligible for 2-dimensional processes, and for 3-dimensions the bias dominates the mean squared error (MSE) of the parameter ...Whittle ... See full document

... The maximum likelihood estimation method based on progressively censored data has been studied extensively, but traditionally, the Newton Raphson (NR) method was utilized to obtain the MLEs ... See full document

... these synchronization tasks is not performed with sufficient ...communications system, the ability for the receiver to detect the transmission of a packet is a critical ... See full document

... popular maximum likelihood estimation method, the iterative algorithm for solving the maximum likelihood estimator when the observation data is the incomplete data, but also is ... See full document

... The preambles described in the previous section are appended to the frames. Each frame will consist of a ’gap’, the preambles and the data symbols. The data is BPSK modulated, which is very easy to implement in Matlab as ... See full document

... Because the coefficients of the under-identified equations cannot be esti- mated, and since the coefficients of the just-identified equations are easily recoverable from the red[r] ... See full document

... In the work, the channel estimation of 2×2 and 4×4 MIMO- OFDM system. Comparison is done for both 2×2 and 4×4 for channel estimation and the results are observed and performances of channel estimators based ... See full document