The spectrum

Regarding the spectrum, LTE becomes quite flexible, allowing bandwidths of 1.25MHz, 1.6MHz, 2.5MHz, 5MHz, 10MHz, 15MHz and 20MHz in the downlink and uplink [4]. Furthermore, it supports broadcast transmission in downlink and uplink-downlink modes, on the other hand, radio resources for broadcast transmissions can be modified according to the operator needs.

The various scenarios which may present between the interaction of different service providers and other networks that they have, are not largely affected because manufacturers have planned coexistence, within the same geographic area, of the EUTRAN with other networks such as 3G and coexistence between adjacent operators, so too, is the case of the overlapping in countries boundaries [4].

The LTE spectral efficiency exceeds largely to HSPA +, these are the results of Telefónica [9], the study provides a scenario of urban centers with high density of buildings, 2x2 MIMO antenna configuration for both cases and using 64QAM as modulation scheme, with this, the study says that LTE spectral efficiency exceeds to HSPA + by 20% at full load. It is apparent from Figure # 1 than for rural or suburban centers LTE benefits will outweigh, furthermore along the chart, the LTE superiority is denoted.

Figure # 1: Spectral efficiency in terms of resource use [9].