Search results
Results From The WOW.Com Content Network
TETRA networks use the mobile country code from ITU-T Recommendation E.212 together with a 14-bit binary mobile network code (T-MNC) where only values between 0 and 9999 are used. [2] However, a TETRA network may be assigned an E.212 network code as well. [3] Some network operators do not have their own radio access network at all.
Low-density parity-check (LDPC) codes are a class of highly efficient linear block codes made from many single parity check (SPC) codes. They can provide performance very close to the channel capacity (the theoretical maximum) using an iterated soft-decision decoding approach, at linear time complexity in terms of their block length.
The lobbies are for parents to pick up and drop off their kids and have free Wi-Fi, refreshments, and games or toys for the kids to play with while on break or waiting for their parents. Meanwhile, the classrooms (referred to as dojos) have small desks and are restricted for only Code Senseis (the educators), and Ninjas (the students), aged 7 ...
Wi-Fi microcontrollers enable Wi-Fi connectivity for devices so that they can send & receive data and accept commands. As such, Wi-Fi microcontrollers can be used for bringing otherwise ordinary devices into the realm of the Internet of things .
IEEE 802.11n is an amendment to IEEE 802.11-2007 as amended by IEEE 802.11k-2008, IEEE 802.11r-2008, IEEE 802.11y-2008, and IEEE 802.11w-2009, and builds on previous 802.11 standards by adding a multiple-input multiple-output (MIMO) system and 40 MHz channels to the PHY (physical layer) and frame aggregation to the MAC layer.
Applications of Barker codes are found in radar, [17] mobile phone, [18] telemetry, [19] ultrasound imaging and testing, [20] [21] GPS, [22] and Wi-Fi. [23] Many of these technologies use DSSS. This technique incorporates Barker code to improve the received signal quality and improve security. [24] These codes also used in radio frequency ...
Unstructured Supplementary Service Data (USSD), sometimes referred to as "quick codes" or "feature codes", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator's computers.
Beamforming or spatial filtering is a signal processing technique used in sensor arrays for directional signal transmission or reception. [1] This is achieved by combining elements in an antenna array in such a way that signals at particular angles experience constructive interference while others experience destructive interference.