TDD


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TDD

Telecommunications Device for the Deaf

TDD

(1) (Telecommunications Device for the Deaf) See TDD/TTY.

(2) (Time Division Duplexing) A transmission method that uses the same channel for the uplink and downlink (transmit and receive), but separates them by time slots. In 1/1 TDD, downlink slots are interleaved equally with the uplink; a 2/1 TDD gives the downlink twice as many slots as the uplink. However, in a wireless application, power is a critical factor. For example, mobile phone antennas transmit less power than the cell tower antennas, and even a 1/1 TDD yields a lower uplink speed to the tower than the downlink speed from the tower. Contrast with FDD.
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DTX dissolved in ethanol (5 mg/mL) and TDD dissolved in pyridine (5 mg/mL) were added and co-cultured with amine-decorated SLN for 30 min.
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For Idea customers with handsets that support Carrier Aggregation of both the FDD and TDD bands, the 4G experience will be far more enhanced with up to 3.5x increase in internet speed, while customers with handsets that do not support Carrier Aggregation will also experience up to 2x increase in internet speeds.
Idea announces double bonanza for 4G customers in Maharashtra, Goa
In Figure 4(d) solutions distribution from TDD and Euler deconvolution methods are displayed as red + and blue x symbols, respectively.
Depth Estimation Using the Tilt Angle of Gravity Field due to the Semi-Infinite Vertical Cylindrical Source
The simulated external quantum efficiency (EQE) and current-voltage (J-V) characteristics of the CuIn[Se.sub.2] based 3J are illustrated in Figures 6(a) and 6(b), respectively, for increasing levels of TDD in the bottom subcell.
Inverted metamorphic III-V triple-junction solar cell with a 1 eV CuIn[Se.sub.2] bottom subcell
YooMee aims to deploy TDD LTE in its new markets within six months.
YooMee Africa selects vendor for LTE deployment
aACoeThis agreement with YooMee is another example of the growing momentum of TDD LTE technology and further underlines Alcatel-LucentaACAOs commitment and success to the technology,aACA[yen] said the statement.
Alcatel-Lucent, YooMee Africa join forces to build ultra-broadband wireless internet in West, Central Africa
To develop metrics for the lighting and thermal performance ratings of TDD products; and
Advanced performance prediction of tubular daylighting devices: new research from the National Research Council of Canada takes an in-depth look inside TDDs
"LTE TDD is a superior alternative in some countries due to its flexibility in uploading and downloading content," said Jong-seok Park, President and CEO of the LG Electronics Mobile Communications Company.
LG to Launch LTE TDD Smartphones in India and 5 Other Countries in 2013
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China Mobile Hong Kong, subsidiary of the world's largest mobile operator China Mobile Limited, has selected Ericsson to expand their commercial LTE network with TD-LTE (LTE TDD) in Hong Kong.
China Mobile Hong Kong selects Ericsson to build TD-LTE network
Ovum has said that LTE TDD has gained wide acceptance from leading infrastructure and device vendors, and the research firm expects 25% of all LTE connections to include LTE TDD by 2016.
LTE TDD to make up 25% of all LTE by 2016
Huawei, a global information and communications technology (ICT) solutions provider, and Saudi Telecom Company (STC), the leading national provider of telecommunications services in Saudi Arabia, have jointly announced the launch of the LTE TDD service in Saudi Arabia.
Huawei, STC launch new service

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