The recipient monkeys received a nonmyeloablative conditioning consisting of fludarabine, cyclophosphamide, total body irradiation and rabbit anti-human thymocyte globulin.

Study on graft-versus-leukemia effects of donor lymphocyte infusion after nonmyeloablative allogeneic bone marrow transplantation;

Analysis and Research of Nonlinear Preprocessing Solution to Stereophonic Acoustic Echo Cancellation;

In order to solve misalignment problem in stereophonic acoustic echo cancellation(SAEC),a nonlinear preprocessing solution based on frequency-shifting was proposed to reduce the correlation between the stereo signals and improve misalignment.

In this paper,a new nonlinear preprocessing solution based on frequency-shifting to reduce the correlation between the stereo signals was proposed.

In the multi-channel echo cancellation,the nonlinear pre-processing is always used to overcome the non-convergence of the filter caused by the strong correlation of input signals.

Polynomial function and hard-clipping function are adopted to simulate the nonlinearity of the loudspeaker system, and the introduction of corresponding nonlinear pre-processing into the Normalized Least-Mean-Square (NLMS) algorithm of acoustic echo cancellation is proposed, thus to improve the effects of the acoustic echo cancellation.

Pre-processing signal to improve echo path identify by adding two nonlinear pre-processing units to conventional stereo acoustic cancellation is one of solutions to overcome above problems.