To realize Integrated Sensing And Communication(ISAC) in multi-antenna wireless systems, the design of integrated waveform is studied. A weighted objective function is proposed to reduce the correlation between waveforms while enabling data communication. The gradient projection method is employed to obtain the initial iteration points, and then the maximization-minimization algorithm is applied to get the waveform design results. Simulation results show that the designed integrated waveform achieves the tradeoff between the performance of communication and sensing, and can be applied to actual wireless systems.