Richard Jhon The global telecommunications industry was not immune to economic forces in 2012 that slowed growth from earlier predictions, according to a new market analysis report from Insight Research. Spending for wireline services contracted in 2012, while spending on wireless services grew modestly. According to the new industry market study, telecommunications services revenue worldwide will grow … Read more
LTE Frame Structure and Resource Block Architecture The figure below shows the LTE frame structure under Time division mode (TDD) Type 2 and Frequency Division mode (FDD) Type 1. Differences in LTE Frame Structure Main differences in LTE Frame Structure between the two modes are Frame 0 and frame 5 (always downlink in TDD) Frame … Read more
USA based AT&T has announced that it is paying US$1.9 billion in cash to buy blocks of radio spectrum from Verizon Wireless. AT&T has agreed to acquire spectrum in the 700 MHz B band from Verizon Wireless for $1.9 billion in cash and AWS spectrum licenses in several markets, including Phoenix, Ariz., Los Angeles and … Read more
Here I write about GSM RF Optimization Step by Step and how to find KPI degradation and its solution. The RF network optimization process can be categorized by the following steps: Problem analysis Analyzing performance retrieved from tool reports and statistics for the worst performing BSCs and/or Sites Viewing ARQ reports for BSC/Site performance trends … Read more
OFDM and SC-FDMA Fundamental OFDM was selected for the downlink because it can Improved spectral efficiency Reduce ISI effect by multipath Provide better Protection against frequency selective fading OFDM is a scheme that offers good resistance to multipath and is now widely recognized as the method of choice for mitigating multipath for broadband wireless. It … Read more
The Vast user of apple iPhone never gone inside more than first 50 applications in the iTunes store as reported by Surikate. There are 52.2 million on an average visits to Apple Store on every week and no more searching or finding becomes more important to user and so no more important for mobile app … Read more
How MU-MIMO Framework in LTE MU-MIMO is widely considered a key technology for system capacity improvement in modern wireless networks. In contrast to SU-MIMO, where the spatial multiplexing gain is confined to a single user, MU-MIMO allows multiple users to be co-scheduled on the same time-frequency resources to exploit this gain among two or more … Read more
MIMO Feedback in LTE Rel 8 CSI feedback allows downlink transmission to be adaptively optimized based on the instantaneous DL channel, so that closed loop beamforming and adaptive link adaptation can be enabled to optimize the system performance. The DL reference signal used for CSI measurement is different in Rel-8 and Rel-10. In Rel-8, CSI … Read more
How SU-MIMO Framework in LTE Rel 8 SU-MIMO is one of the key technologies in LTE Rel 8. There are two major operations under SU-MIMO: transmit diversity and spatial multiplexing. Transmit diversity is an efficient way to improve the reliability of a system. Accordingly, it is used in LTE Rel-8 for control channel and data … Read more
The Mobile Equipment and SIM are the only parts of the GSM network which the subscriber will really see. Let’s see what inside it. GSM Mobile Equipment There are three main types of ME, these are listed below: Vehicle Mounted These devices are mounted in a vehicle and the antenna is physically mounted on the … Read more