Reference [5] COMPARISON OF RADIO PROPAGATION CHARACTERISTICS AT 700 AND 2,500 MHz PERTAINING TO MACROCELLULAR COVERAGE Communications Research Centre Canada Ottawa, April 2011
ic.gc.ca
The preceding observations are based on path loss calculations for mobile station locations outside any buildings, and do not take into account signal losses due to wave penetration into buildings. Based on empirical results (Table 5), average building penetration losses in residential areas are estimated to be 3.9 dB lower at 700 MHz than at 2,500 MHz; as a result, indoor coverage near cell boundaries in such environments is expected to be comparatively better at 700 MHz. In industrial/commercial environments, on the other hand, average building penetration losses are estimated to be 4.3 dB higher at 700 MHz, leading to decreased indoor coverage performance with respect to 2,500 MHz.
== reprising == Maravedis: Small cells will end mobile market's obsession with sub-1GHz spectrum October 15, 2012 | By Adlane Fellah fiercebroadbandwireless.com
During these early stages of commercial LTE development, the mobile industry has been fixated on low frequency spectrum, sometimes to the point of madness. However, low frequencies rapidly run out of capacity, which is why the investment markets, and many carriers, have become too dazzled by their appeal in recent years. Now, thanks to the cellcos' new preoccupation--small cell networks-- the pendulum is set to swing the other way. |