The 4G Revolution: LTE and Advanced Features
The chapter discusses the evolution of mobile technology leading up to 4G, focusing on the characteristics of IMT-Advanced, Long-Term Evolution (LTE), and LTE Advanced Pro. It outlines key performance metrics such as peak data rates, reduced latency, and increased spectral efficiency that were necessary to enhance mobile broadband experiences. Additionally, it explains the technological advancements within LTE, including OFDM, MIMO, and carrier aggregation, which synergistically contribute to achieving the demanding requirements of modern mobile applications.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- IMT-Advanced defines 4G technology standards, emphasizing higher speed, reduced latency, and improved quality of service.
- Orthogonal Frequency-Division Multiplexing (OFDM) and Multiple-Input Multiple-Output (MIMO) are key technologies that enhance spectral efficiency and throughput in LTE.
- LTE Advanced Pro introduces features that further extend LTE capabilities, preparing for the transition to 5G technologies.
Key Concepts
- -- IMTAdvanced
- The International Telecommunication Union's framework for defining 4G technology with specific performance goals for mobile broadband.
- -- OFDM
- A modulation scheme used in LTE that allows for robust transmission of data over wireless channels by dividing the data into multiple parallel streams.
- -- MIMO
- An antenna technology that utilizes multiple transmitters and receivers to improve communication performance by exploiting spatial dimension.
- -- VoLTE
- Voice over LTE, a technology allowing voice communications to be transmitted over LTE's all-IP network, offering high-quality voice service.
- -- Carrier Aggregation
- A technique used in LTE Advanced Pro that enables wide bandwidth transmission by combining multiple frequency bands.
Additional Learning Materials
Supplementary resources to enhance your learning experience.