As the number of higher throughput applications grows sharply, there is a need for wider bandwidth and network coverage in wireless systems. However, given limited spectrum allocation, strategies must be found to improve spectral efficiency and signal-to-noise ratio (SNR). Multi-antenna techniques, such as Multi-input Multioutput (MIMO) and beamforming, can help achieve diversity, multiplexing, and antenna gain in order to improve spectral efficiency and signal-to-noise ratio (SNR). This white paper will help the reader understand phase coherence and why it matters, and offer tactics for generating phase-coherent signals. Download the full paper for more information.