LTE is the common global 4G standard for paired (FDD) and unpaired (TDD) licensed spectrum. We can now extend the benefits of LTE Advanced also to unlicensed spectrum, the shared resource used by multiple technologies such as Wi-Fi. This is an ideal solution for mobile operators to augment mobile broadband and help to meet the 1000x challenge.

An LTE Direct workshop organized by Qualcomm and Samsung in May 2013 brought together thought leaders from Deutsche Telekom, DOCOMO, KDDI, Orange, Placecast, Samsung, SAP, Sapient, SKT, Softbank, Tagged, and Verizon.

This 4G Americas white paper provides an in-depth look at 3GPP Release 11 and Release 12 technology standards, including HSPA+, LTE-Advanced and Machine Type Communications.

This article from Freescale provides an excellent introduction to the LTE physical layer. The topics included are:

- LTE basic concepts
- Introduction to OFDM

The  term “Digital Dividend” usually refers to the spectrum released  by the switchover from analog to digital TV broadcasting. Digital dividend spectrum is ideally suited to providing cost-effective mobile and broadband wireless services representing a significant and important asset for a country’s economic and social development.

The high computation demands of next-generation cellular and broadcast wireless require both higher efficiency and greater flexibility in baseband processing.