Search results
Results from the WOW.Com Content Network
In 3G, the most prevalent technology was UMTS with CDMA-2000 in close contention. All radio access technologies have to solve the same problems: to divide the finite RF spectrum among multiple users as efficiently as possible. GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM.
The Universal Mobile Telecommunications System (UMTS) is a 3G mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP (3rd Generation Partnership Project), UMTS is a component of the International Telecommunication Union IMT-2000 standard set and compares with the CDMA2000 standard set for networks based on the competing cdmaOne technology.
The following is a list of mobile telecommunications networks using third-generation Universal Mobile Telecommunications System (UMTS) technology. This list does not aim to cover all networks, but instead focuses on networks deployed on frequencies other than 2100 MHz which is commonly deployed around the globe and on Multiband deployments.
Evolved HSPA (also known as HSPA Evolution, HSPA+) is a wireless broadband standard defined in 3GPP release 7 of the WCDMA specification. It provides extensions to the existing HSPA definitions and is therefore backward compatible all the way to the original Release 99 WCDMA network releases. Evolved HSPA provides data rates between 42.2 and 56 ...
UMTS W-CDMA HSPA (HSDPA+HSUPA) 3GPP: Mobile Internet: CDMA/FDD CDMA/FDD/MIMO: 0.384 14.4: 0.384 5.76: HSDPA is widely deployed. Typical downlink rates today 2 Mbit/s, ~200 kbit/s uplink; HSPA+ downlink up to 56 Mbit/s. UMTS-TDD: 3GPP: Mobile Internet: CDMA/TDD: 16: Reported speeds according to IPWireless using 16QAM modulation similar to HSDPA ...
Cellular Technology: WCDMA (DB-DC-HSDPA, DC-HSUPA), TD-SCDMA, CDMA 1x, EV-DO, GSM/EDGE; Downlink LTE: LTE Category 18 (1200 Mbit/s). 5x20 MHz carrier aggregation. Maximum 12 spatial streams. Up to 256-QAM. Up to 4x4 MIMO on three carriers; Uplink LTE: LTE Category 13 (150 Mbit/s). 2x20 MHz carrier aggregation. Up to 64-QAM; Samsung 10 nm LPE ...
AOL Mail welcomes Verizon customers to our safe and delightful email experience!
Dual-Carrier HSUPA, also known as Dual-Cell HSUPA, is a wireless broadband standard based on HSPA that is defined in 3GPP UMTS release 9. Dual Cell (DC-)HSUPA is the natural evolution of HSPA by means of carrier aggregation in the uplink. [9] UMTS licenses are often issued as 10 or 15 MHz paired spectrum allocations.