A correlation function for partially correlated waves and hallway angular response model is proposed. The deterministic hallway angular response model is used to determine incident magnitude at arbitrary angle. With that angular response, the partially correlated correlation function is investigated. Correlated and uncorrelated waves are classified with physical characteristics of incident waves. The proposed correlation function and the angular response model can provide a correlation in a specific geometry of propagation environment and electrical parameters of the environment in a hallway because the model is a function of the ratio of hallway width to Tx-Rx distance and electrical wall characteristics.