To overcome these problems, the continuity of both dependent variables and fluxes as boundary conditions is proposed, which lead to the expected results for very long equalization times (the flux of each component is conserved and flat and continuous spatial profiles of all the dependent variables are obtained in both beds).
It is demonstrated that both kinds of boundary conditions can lead to unrealistic results (either mass and heat flux are not conserved or molar fraction and temperature are not continuous in both beds) if the contribution of dispersion to axial mass flow is important, which occurs for long equalization times.
Although Low-Density Parity-Check (LDPC) codes perform admirably for large block sizes — being mostly resilient to low levels of channel SNR and errors in channel equalization — real time operation and low computational effort require small and medium sized codes, which tend to be affected by these two factors.
However, for systems having fading channels with multi-path, channel equalization and time of arrival (TOA) estimation needs to be performed prior to demodulation.
Studies in [21, 22] show that, in order to obtain the sub-optimal performance after trellis-based equalization, discrete time minimum-phase overall impulse response needs to be carried out previously.
The training sequence known as reference signal is used for the channel equalization in time domain when receiving signals for each cell, so that it can improve the anti-interference ability of GSM mobile communication system.
This paper presents the development of novel type-2 neuro-fuzzy system for identification of time-varying systems and equalization of time-varying channels using clustering and gradient algorithms.
Due to high-speed transmission and high-mobility terminals, equalization for time-varying and frequency-selective (a.k.a. doubly-selective) channels is an important issue.
The analytic derivation of the CB-FMT power spectral density (PSD) and the PAPR are discussed in Section 4. Equalization in time-variant frequency-selective fading is discussed in Section 5. A sub-channel FD MMSE equalizer is herein proposed.
