Strategy of iterative solution is applied to the proposed algorithm.

This paper proposes an iterative demodulation method applied in the bit-Interleaved QPSK system.

First,we constructed a pair of appropriate upper and lower solutions,and then we proved the existence of the traveling wave solutions between two equilibria of the system by using the monotone iteration approach.

This paper is devoted to investigate a kind of lattice Nicholson s blowflies model with delay,and prove the existence of traveling wavefronts by upper-lower solution and monotone iteration technique.

It is shown that the system exist monotone traveling wave solutions by using monotone iteration with upper and lower solutions provided wave speed satisfies some conditions.

The method of upper and lower solutions and the monotone iterative technique are used.

By using cone theorem and monotone iterative method, the mixed monotone condition in A(x,y)+Mx in Banach spaces is extended.

It obtains the existence results by using the monotone iterative method of lower and upper solutions and improves the results.

In this paper,the monotone iterative technique for periodic boundary value problems with causal operators is developed.

The existence of solutions and coupled minimal and maximal quasi-solutions of nonlinear Volterra impulsive integral equations in ordered Banach spaces is given by monotone iterative technique under G(t,s,x) and I_k(k=1,2,…,m) without monotone conditions.

Under the compact type condition,a comparision theorem and monotone iterative techniques are founded on ,+∞) by using the theory of noncompactness measure and upper and lower solutions method,three existence results of global solutions are obtained for a initial value problem of ordinary differential equation in Banach spaces.