Specifications

Rev 8 Apr.14 Proprietary and Confidential - Contents subject to change 95
F
F: Technology Overview
LTE
LTE (Long Term Evolution) is a 4th-generation wireless standard.
The 3GPP Release 8 specification outlines the features and
requirements.
Key features include.
• Peak data rate:
· 100 Mbps DL within 20 MHz bandwidth
(Peak DL data rate in 10 MHz bandwidth: 70 Mbps (approx.) for
Cat 3 device)
· 50 Mbps UL within 20 MHz bandwidth
Actual throughput depends on the network configuration, band-
width assigned to the UE, the number of users, and RF signal
conditions.
• Up to 200 active users in a cell (5 MHz)
• Less than 5 ms user-plane latency
• Supported bandwidths: 1.4/3/5/10/15/20 MHz (See Ta bl e 4 - 2
on page 46 for band-specific support.)
• Spectrum flexibility: 1.4–20 MHz (3–20 MHz in future F/W
release)
• Enhanced support for end-to-end QOS
• Frequency Division Duplexing (FDD)
• Physical layer uses:
· DL: OFDMA (Orthogonal Frequency Division Multiple Access).
Modulation: QPSK, 16QAM, and 64QAM
· UL: Single Carrier FDMA (single carrier modulation and
orthogonal frequency multiplexing)
Modulation: QPSK and 16QAM
• MIMO (Multi-Input Multi-Output) antenna support
UMTS
The Universal Mobile Telecommunications System (UMTS)
specification is the 3G mobile systems standard based on an
evolution of GSM core network components. High-speed 3G systems
implementing the UMTS standard enable improved performance for
wireless data applications, delivery of enhanced multimedia content,
and improved network capacity to support additional subscribers.