[PDF] Top 20 RF-Pilot Based Frequency Offset Estimation and Phase Noise Compensation for CO-OFDM Systems

... Orthogonal frequency division multiplexing (OFDM) is a modulation technique which is now used in most new and emerging broadband wired and wireless communication systems, because it is an effective ... See full document

... the phase noise effects in orthogonal-frequency-division-multiplexing (OFDM) systems, in which the time-average of phase noise within an OFDM symbol block is ... See full document

... the phase noise analysis in [3-5,15] assumes a matched filter receiver implementation whereas an FFT DEMUX and detection implementation is the basis for the analysis in [6-14, ...detection OFDM ... See full document

... In OFDM, the entire channel is divided into many narrow band subchannels, which are transmitted in parallel, thereby, the symbol duration is increased and intersymbol interference (ISI) is ...the frequency ... See full document

... of RF front-end and reduces costs, but on the other hand introduces distur- bances such as in-phase/quadrature (I/Q) imbalance and dc offset (DCO), ...joint estimation of CFO along with I/Q ... See full document

... signal estimation in general multicarrier systems without any decision-directed ...of phase distortions is known, estimation is carried out in the time ... See full document

... orthogonal frequency division multiplexing (OFDM) for future wireless networks, a derivative of OFDM based on offset quadrature amplitude modulation (OFDM/OQAM) has received ... See full document

... optical RF pilot tone for phase noise correction (including red system ...the RF tone path uses the same tap ...optical noise which is used to measure the bit error rate (BER) as ... See full document

... Orthogonal frequency division multiplexing (OFDM) systems [1] are popular broadband communication systems and have been well known to be effective against multipath ...general OFDM sys- ... See full document

... CFO estimation algorithms for OFDM systems with TV-DCO, ...CFO estimation algo- rithm for OFDM systems with TV-DCO. Based on lin- ear approximation of TV-DCO, the proposed ... See full document

... the phase errors between the inphase (I) and quadrature (Q) branches in analog quadrature ...the phase imbalance is caused by the non- orthogonality of the I and Q ...and phase imbalance would result ... See full document

... Phase estimation using pilot carriers is already an established ...different pilot for different groups gives better result in terms of BER than considering the pilot carriers over all ... See full document

... for OFDM imple- mentations (DD-OFDM and CO-OFDM systems) and the low channel baud-rate leads to a significant influ- ence of the laser phase ...for CO-OFDM ... See full document

... MIMO OFDM sys- tem with multiple transmit antennas and no ...different frequency offsets and so does not use the common support ...joint estimation of both CFO and CIR while the dictionary generation ... See full document

... communication systems due to its high data rate transmission capability with high bandwidth efficiency and robustness to multipath fading and ...As OFDM makes use of the spectrum efficiently, it has been ... See full document

... Channel state information is vital for data detection and also for channel equalization. It can be obtained in different ways that is training symbols that are a priori known at the receiver, whereas the other is blind, ... See full document

... antenna systems using (a) the proposed al- gorithm with perfect symbol timing and known channel or- der; (b) the proposed algorithm with perfect symbol timing and UCO; (c) the proposed algorithm with UCO and sym- ... See full document

... process based applications, where processed and refined input symbol probabilities are iteratively fed back to the demodulator as a priori ...communication systems 19,20,21 ... See full document

... term frequency offset refers to a non-zero carrier frequency seen at baseband in the ...from RF, as well as frequency drift caused by Doppler ...the OFDM subcarriers to be viewed ... See full document

... The phase noise is constructed by two parts: Common Phase Error (CPE) and Inter carrier Interference ...the phase in a specific subcarrier only, while ICI is caused by the interference between ... See full document