Passive Distributed Antenna Systems in 3G
Various internal antenna solution can meet the different needs of the deployment. DAS solution distributes a plurality of antenna nodes throughout the coverage area. Each antenna assembly can transmit and…
CDMA Handoff Defination,Types and Capacity
Handoffs The TIA/EIA Interim Standard, Mobile Station – Base Station Compatibility Standard of Dual- Mode Wideband Spread Spectrum Cellular System (TIA/EIA/IS-95), states that a CDMA base station shall support three…
Airtel,Vodafone & Idea Request Government To use CDMA Spectrum For GSM Services
Three of India’s largest mobile networks have requested that a portion of the radio spectrum reserved for CDMA services be re purposed for use by the GSM networks. Bharti Airtel,…
T-Mobile USA : We would love to carry the iPhone but not by any cost
Although T-Mobile USA is the only major US network not offering Apple’s iPhone, and is seen to be weaker for the lack of it, the company wont follow Sprint Nextel…
Spatial multiplexing and Receive Diversity in Wimax
Spatial multiplexing WiMAX also supports spatial multiplexing, where multiple independent streams are transmitted across multiple antennas. If the receiver also has multiple antennas, the streams can be separated out using…
Advanced Antenna Systems,Transmit diversity and Beamforming in Wimax
Advanced Antenna Systems The WiMAX standard provides extensive support for implementing advanced multiantenna solutions to improve system performance. Significant gains in overall system capacity and spectral efficiency can be achieved…
Google Going to Set Up its Own Mobile Network
Google is reported to have held preliminary discussions that could lead to it setting up its own wireless network in the USA, according to a report in the Wall Street Journal….
Uplink data transmission in LTE
The mapping of transport channels and UL control information (UCI) to physical channels is a task of the physical layer (PHY). Furthermore reference signals are provided by the physical layer…
Microsoft Surface RT More Profitable Than IPad, Teardown Analysis Reveals
The Surface RT model with the minimum 32 gigabytes of NAND flash memory and an optional black Touch Cover carries a bill of materials (BOM) of $271.00, according to a…
OFDM Receiver and How it work for LTE?
The receiver is like in any other radio system the more complicated part. In radio systems and of course also OFDM there are two special points a receiver has to…
What is SC-FDMA and how it works in LTE?
One of the major drawbacks of an OFDMA system is, that the transformation of a complex symbol mapped sequence (e.g. BPSK, QPSK, etc.) onto a small set of subcarriers produces…
Radio Protocol Architecture in LTE
The EUTRAN radio protocol model specifies the protocols terminated between UE and eNB. The protocol stack follows the standard guidelines for radio protocol architectures (ITU-R M1035) and is thus quite…