Citizens Broadband Radio Service (CBRS), Frequency Spectrum, Operation Modes and Its Applications
Citizens Broadband Radio Service (CBRS) is a 150 MHz wide broadcast band in 3.5 GHz band starting from 3550 MHz to 3700 MHz. The Federal Communications Commission (FCC) regulates interstate and international communications by radio, […]
Citizens Broadband Radio Service Device(CBSD), Its Types and OEMs
Citizens Broadband Radio Service Device(CBSD): As per FCC, an eNodeB which is capable to support CBRS band is referred as Citizens Broadband Radio Service Device. LTE band B42 and B43 […]
Maximum Coupling Loss (MCL) and Maximum Path Loss (MPL)
Maximum Coupling Loss has been chosen by 3GPP as the metric to evaluate coverage of a radio access technology. In theory, it can be defined as the maximum loss in […]
Amplifier Efficiency Concept, How Envelope Tracking (ET) helps better efficiency to Power Amplifiers?
Envelope tracking (ET) describes an approach to radio frequency (RF) amplifier design in which the power supply voltage applied to the RF power amplifier is continuously adjusted to ensure that the amplifier is operating at peak efficiency for […]
Cat. NB1 and Cat. NB2 Devices Comparison
Narrow Band IoT specifications was first introduced in 3GPP release 13 and then further enhanced in 3GPP release 14 with some essential features. Release 13 NB-IoT device category is referred […]
Narrow Band IoT Frame Structure
NB- IoT frame structure is illustrated in below picture. At the highest level, it starts with hyperframe cycle where one hyperframe cycle has 1024 hyperframes and each consisting of 1024 […]
Samsung’s Exynos i S111 a New NB-IoT Modem
Samsung , the world leader in semiconductor and telecommunication has announced its new narrow band IoT (NB-IoT) chip set modem named as, Exynos i S111. Exynos i S111 is an LTE […]
NB-IoT Frequency Bands (As per 3GPP Rel. 13, 14 and 15)
3GPP has defined a set of frequency bands for which NB-IoT can be used. 3GPP TS 36.101 from Release 13 provides the list of the supported bands: 1, 2, 3, 5, […]
5G-NR (New Radio) Modem Chipset Vendors
5G New Radio development is going at fast pace and its network rollout sounds good in very near future. These networks will not be useful without devices and devices will […]
5G NR-Master Information Block (NR-MIB)
Over all structure of MIB and SIB in NR is almost similar to LTE and other legacy technologies. However there is a major difference related to the periodical transmission of […]