What is the benefit of using OFDM in LTE?
The primary advantage of OFDM over single-carrier schemes is its ability to cope with severe channel conditions (for example, attenuation of high frequencies in a long copper wire, narrowband interference and frequency-selective fading due to multipath) without complex equalization filters.
What are LTE-Advanced features?
- Increased peak data rate: Downlink 3 Gbps, Uplink 1.5 Gbps.
- Higher spectral efficiency: Uplink 16bps/Hz, Downlink 30 bps/Hz.
- Increased number of simultaneously active subscribers.
- Improved performance at cell edges, e.g. for Downlink 2×2 MIMO by at least 2.40 bps/Hz/cell.
How does LTE-Advanced offers higher data rate?
LTE-Advanced networks use multiple-input, multiple-output (MIMO) technology to deliver data faster via more than one signal. MIMO requires multiple antennas to receive those signals, which can limit its use in compact mobile devices such as smartphones and tablets.
What is the main disadvantage of OFDM?
The main drawbacks of OFDM are its high peak to average power ratio and its sensitivity to phase noise and frequency offset.
What are the disadvantages and limitations of OFDM?
Drawbacks or disadvantages of OFDM data modulation ➨OFDM is more sensitive to CFO (carrier frequency offset) than SC system. It has higher CFO due to different LOs (Local Oscillators) and DFT leakage. This requires complex frequency offset correction algorithms at the OFDM receiver.
What is difference between LTE and LTE Advanced?
LTE-Advanced (LTE-A) is an emerging and, as the name suggests, a more advanced set of standards and technologies that will be able to deliver bigger and speedier wireless-data payloads. The most important thing to know is that LTE-A promises to deliver true 4G speeds, unlike current LTE networks.
How would you explain LTE Advanced to your customer?
LTE Advanced is the next major step in the evolution of our LTE networks. It’s a new network technology that’s expected to both help band-aid the massive increases in mobile data demand, and deliver much higher data speeds for all. That means better coverage, greater stability, and faster performance.
What is carrier aggregation in LTE Advanced?
Carrier Aggregation in LTE-Advanced. Carrier aggregation (CA) is one of the most important features of LTE-Advanced. This feature allows the combination of two or more carrier channels into a single aggregated channel, thus enabling higher throughput as well as more efficient use of the highly fragmented LTE spectrum.
What are the benefits of OFDM?
The main benefit of OFDM over single-carrier schemes is its ability to cope with severe channel conditions without complex equalization filters. It has improved the quality of long-distance communication by eliminating InterSymbol Interference (ISI) and improving Signal-to-Noise ratio (SNR).