Method and apparatus for diversity receiving OFDM signal by time domain oversamplingThe invention provides a diversity receiving method and device for an OFDM receiver, where the method firstly oversamples OFDM signals in time domain and resamples time-domain signals through interpolation by integral ...
OFDM signals are best described in the frequency domain as collection of sub-carriers, each with its information carried in its magnitude and phase. In order to transmit such a composite signal, it must be converted into the time domain. An efficient method of doing this is with an Inverse ...
OFDMCAZAC sequenceZadoff-Chu sequenceSymbol Timing EstimationVLC.We have found out that the CAZAC- OFDM accords the amplitude of IFFT output signal withthe amplitude of input DATA and the time ordering of IFFT output signal is unambiguouslydetermined. That is, the OFDM time-domain signals, which ...
for iter=1:MaxIter %y_aw=add_AWGN(y_CFO,sig_pow,SNRdB,'SNR',Nbps); % AWGN added, signal power=1 y_aw = awgn(y_CFO,SNRdB,'measured'); % AWGN added, signal power=1 %%%%*** 方案一 ***%%%% %%%%%*** 利用CP进行小数倍频偏估计 Est_FFO_CP = CFO_CP(y_aw,Nfft,Ng); % ...
[3] VAN DE BEEK J J,SANDELL M,BORJESSON P O.ML estimation of time and frequency offset in OFDM systems[J].IEEE Transactions on Signal Processing,1997,45(7):1800-1805. [4] SCHMIDL T M,COX D C.Robust frequency and timing synchronization for OFDM[J].IEEE Transactions on Communications,19...
[3] MORELLI M,MENGALI U.A comparison of pilot-aided channel estimation methods for OFDM systems[J].IEEE Transactions on Signal Processing,2001,49(12):3065-3073. [4] MINN H.An investigation into time-domain approach for OFDM channel estimation[J].IEEE Transactions on Broadcasting,2000,46(4)...
frequency domain equalization. The time domain part of this algorithm is detailed in this thesis, including TFTEQ and FSTEQ. And reduced FSTEQ is proposed here as well, which decreases computing complexity. V According to the signal characteristics after TEQ, right FEQ is chosen. ...
Number of right guard subcarriers—Number of guard band subcarriers in right extreme of OFDM symbol 5(default) | integer in range from 0 to (FFT length/2) – 1 Insert DC Null—Option to insert DC null on(default) |off Enable reset input port—Reset signal ...
domain signal to time-domain signal, and the FFT Shift block performs time-domain FFT shift. The CP Addition block adds CP-length samples from the end of the symbol to its prefix. The Windowing block performs windowing and overlapping of adjacent OFDM symbols of complex symbols in the ...
The signals transmitted on the subcarriers of an OFDM system are mutually orthogonal in the time domain; that is, However, these signals have significant overlap in the frequency domain. This can be observed by computing the Fourier transform of the signal for several values of k. ...