Propagation Characteristics of the LTE Indoor Radio Channel With Persons at 2.6 GHz

In this letter, the propagation characteristics of an indoor, short-range channel with random distributed persons in a room at 2.6 GHz are studied and modeled. The study and model are based on plenty of data sampled in off-hour and rush-hour scenarios with both line-of-sight (LOS) and non-LOS (NLOS) conditions. The study shows that in NLOS, root mean square (RMS) delay spread has significantly 2.41 ns increased for the rush-hour scenario compared to off-hour. The median value of 3-dB coherence bandwidth in off-hour is wider than that in rush-hour (0.87 MHz wider in LOS and 1.97 MHz wider in NLOS). The 3-dB coherence bandwidth is an empirical exponential inverse relationship to RMS. Moreover, a t-location distribution fits the cumulative distribution function (CDF) of 3-dB coherence bandwidth well in off-hour, while a normal distribution fits appropriately in rush-hour.