Siemens bss 63
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The document describes transmission diversity functionality in base station systems. It allows base station sites with combined control unit (CU) pairs to apply transmission diversity to keep up with capacity requirements and operate in adjustable modes. Transmission diversity mode provides double power and half capacity using a master and slave CU pair. Later, slave CUs can be released from pairs and become single CUs for additional base station sites if more are installed.
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Web : http://www.lemenizinfotech.com
web : http://www.lemenizinfotech.com/tag/ieee-projects-in-pondicherry/
Web : http://ieeemaster.com
Web : http://ieeemaster.com/power-electronics-ieee-projects-2016-2017/
Web : http://ieeemaster.com/power-system-ieee-projects-2016-2017/
Address: 36, 100 Feet Road(Near Indira Gandhi Statue), Natesan Nagar, Pondicherry-605 005
Contact numbers: +91 95663 55386, 99625 88976 (0413) 420 5444
Mail : projects@lemenizinfotech.com
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Web : http://www.lemenizinfotech.com
web : http://www.lemenizinfotech.com/tag/ieee-projects-in-pondicherry/
Web : http://ieeemaster.com
Web : http://ieeemaster.com/power-electronics-ieee-projects-2016-2017/
Web : http://ieeemaster.com/power-system-ieee-projects-2016-2017/
Address: 36, 100 Feet Road(Near Indira Gandhi Statue), Natesan Nagar, Pondicherry-605 005
Contact numbers: +91 95663 55386, 99625 88976 (0413) 420 5444
Mail : projects@lemenizinfotech.com
Mobile : 9566355386 / 9962588976
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This document discusses a proposed space time block code-orthogonal frequency division multiplexing (STBC-OFDM) downlink baseband receiver for mobile wireless metropolitan area networks (WMANs). The proposed receiver applies STBC-OFDM techniques using two transmit antennas and one receive antenna to provide robust performance in outdoor mobile environments. It includes a simple and robust synchronizer and an accurate but affordable channel estimator to overcome challenges of multipath fading channels. Simulation results show the receiver can achieve a coded bit error rate of less than 10-6 for 16QAM modulation under vehicle speeds of 120 km/hr while supporting up to 27.32 Mb/s of uncoded data transmission. The receiver designed in a 90-nm CMOS
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This document describes the real-time implementation of an adaptive wide-area control system (WACS) that considers communication delays. The WACS uses measurements from different areas of a power system to provide stabilizing control signals to generators. A simultaneous recurrent neural network is used for system identification and control in the WACS design. The performance of the WACS is evaluated on a two-area power system model implemented on a real-time digital simulator. The WACS is able to provide damping and compensate for communication delays of up to 1.4 seconds in signals.
Cdma
This document discusses the key differences between regular TDMA and W-CDMA technologies. It provides details on:
1. How W-CDMA uses orthogonal Walsh codes to provide multiple radio channels within the same frequency spectrum, enabling precise timing and control.
2. The use of 64-bit Walsh codes in IS-95 CDMA systems that are orthogonal to each other and have equal numbers of 1s and 0s.
3. The basic spreading procedure in CDMA which involves XORing data with Walsh codes, further scrambling into I and Q channels using short and long PN sequences before transmission.
Research Inventy : International Journal of Engineering and Science
Research Inventy : International Journal of Engineering and Science
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed
Duty Cycle Corrector Using Pulse Width Modulation
In circuits, clocks usually play a very important role. Whenever data needs to be sampled, it is done with respect to clock signals. It uses the edges of the clock to sample the data. So, it becomes very much necessary to see to it that the clock signals are properly received specially in receiver circuits where data sampling is done, mainly in Double data rate(DDR) circuits. Due to effects such as jitter, skew, interference, device mismatches etc., duty cycle gets affected. We come up with duty cycle correctors that ensure 50% duty cycle of the clock signals. A duty cycle corrector (DCC) with analog feedback is proposed and simulated in 45nm process technology node. The duty cycle corrector operates for MHz frequency range covering the duty cycle from 35%-65%, with +/- 1.5% accuracy. The design is simple and the power consumption is 1.01mW.
International Journal of VLSI design & Communication Systems (VLSICS)
In circuits, clocks usually play a very important role. Whenever data needs to be sampled, it is done with respect to clock signals. It uses the edges of the clock to sample the data. So, it becomes very much necessary to see to it that the clock signals are properly received specially in receiver circuits where data sampling is done, mainly in Double data rate(DDR) circuits. Due to effects such as jitter, skew, interference, device mismatches etc., duty cycle gets affected. We come up with duty cycle correctors that ensure 50% duty cycle of the clock signals. A duty cycle corrector (DCC) with analog feedback is proposed and simulated in 45nm process technology node. The duty cycle corrector operates for MHz frequency range covering the duty cycle from 35%-65%, with +/- 1.5% accuracy. The design is simple and the power consumption is 1.01mW.
DUTY CYCLE CORRECTOR USING PULSE WIDTH MODULATION
In circuits, clocks usually play a very important role. Whenever data needs to be sampled, it is done with
respect to clock signals. It uses the edges of the clock to sample the data. So, it becomes very much
necessary to see to it that the clock signals are properly received specially in receiver circuits where data
sampling is done, mainly in Double data rate(DDR) circuits. Due to effects such as jitter, skew,
interference, device mismatches etc., duty cycle gets affected. We come up with duty cycle correctors that
ensure 50% duty cycle of the clock signals. A duty cycle corrector (DCC) with analog feedback is proposed
and simulated in 45nm process technology node. The duty cycle corrector operates for MHz frequency
range covering the duty cycle from 35%-65%, with +/- 1.5% accuracy. The design is simple and the power
consumption is 1.01mW.
Implementation of Stopwatch using QCA based Carry Select Adder
As transistor size reduces and more of them can be accommodated in a single die, thus rising chip computational capabilities. However, transistors cannot get smaller than their current size. The quantum-dot cellular automata (QCA) approach represents one of the possible solutions in overcoming this physical limit. The design of adders on quantum-dot cellular automata has been of recent interest. This paper presents an efficient QCA design for the Carry Select Adder (CSA). The QCA based CSA has better performance in terms of area and delay than the existing RCA. The application of this QCA based Carry Select Adder in stopwatch also designed.
Wmc ppt
Power control strategies are used in GSM and CDMA networks to optimize signal strength and minimize interference. In GSM, the base station and mobile station adjust their transmitted power based on measurement reports to maintain a desired signal quality and strength. The power control aims to save power, reduce interference, and increase network quality. It includes uplink and downlink power control performed independently. Power control regulates the signal power in steps of 2 dB and takes three periods or 480 ms to provide feedback from when a command is sent. This process helps control interference levels and prolongs battery life in cellular networks.
2G-Handovers || BY-Ankur Tomar
The document discusses different types of handovers that occur in 2G GSM, 3G WCDMA, 4G LTE, and between technologies. It describes intra-BTS, intra-BSC, inter-BSC, and inter-MSC handovers in 2G; soft, hard, and softer handovers in 3G; and intra-E-UTRAN handovers in 4G including the key signaling steps and information exchanged between nodes. It also summarizes GSM to UMTS and UMTS to GSM handovers, highlighting differences in compressed and blind mode techniques.
Finalpresentation 130222143702-phpapp02
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cdma-technology_compress.pdf
CDMA technology uses code division multiple access to allow multiple users to access the network simultaneously using the same frequency band. It uses pseudo-random noise codes with a spread spectrum technique. The document discusses CDMA components like Walsh codes, frequency bands, and channel concepts. It explains the generation of different CDMA channels including pilot, sync, paging, traffic and access channels. It also covers CDMA operations like call processing states, registration types, and handoff procedures.
An Improved Phase Disposition Pulse Width Modulation (PDPWM) For a Modular Mu...
1) The document proposes an improved phase disposition pulse width modulation (PDPWM) method for a modular multilevel inverter used for photovoltaic grid connection.
2) The method, called selective virtual loop mapping (SVLM), aims to achieve dynamic capacitor voltage balance without adding an extra compensation signal.
3) It establishes the concept of virtual submodules and balances voltages by changing the loop mapping relationships between virtual and real submodules, making it suitable for modular multilevel converters with a large number of submodules.
Wcdma p&o-c-en-wireless technology-2-201006-24
This document discusses key WCDMA wireless technologies including power control, handover, and RAKE receivers. It provides details on:
- Power control including inner loop power control to maintain signal quality and outer loop power control to set thresholds based on quality of service. Both uplink and downlink power control are discussed.
- Handover types including soft handover which maintains service continuity and hard handover which interrupts service. Softer handover between sectors is also mentioned.
- The general handover flow including measurement, reporting, and the RNC deciding whether to initiate a handover based on reports and algorithms.
Wcdma p&o-c-en-wireless technology-2-201006-24
This document discusses key WCDMA wireless technologies including power control, handover, and RAKE receivers. It provides details on:
- Power control including inner loop power control to maintain signal quality and outer loop power control to set thresholds based on quality of service. Both uplink and downlink power control are discussed.
- Handover types including soft handover which maintains service continuity and hard handover which interrupts service. Softer handover between sectors is also mentioned.
- The general handover flow including measurement, reporting, and the RNC deciding whether to initiate a handover based on reports and algorithms.
ENERGY EFFICIENT SMALL CELL NETWORKS USING DYNAMIC CLUSTERING
Abstract— Clustering approach that fuses, past established area based measurements, the impacts of the time-differing BS stack. Grouping empowers intra-bunch coordination among the base stations with the end goal of streamlining the downlink execution by means of load adjusting. Because of between group impedance, the bunches need to rival each other to settle on choices on enhancing the vitality proficiency by means of a dynamic decision of rest and dynamic states.
Keywords— Energy Efficiency, Small Cell Networks.
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Research Inventy : International Journal of Engineering and Science
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ENERGY EFFICIENT SMALL CELL NETWORKS USING DYNAMIC CLUSTERING
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This document provides an overview of the technical description of the BS-240/241 Base Station System. It includes abbreviations for various components of the base station system such as the Base Core Controller, Diversity Amplifier Multi Coupler, Edge Carrier Unit, and High Power Duplexer Unit. The base station system supports wireless technologies including GSM, GPRS, EDGE, and WCDMA. It has a modular structure that allows flexibility in configuration.
Siemens bss 68
A special setting of the 'associatedString' attribute in the CREATE ENVABTSE command allows operators to indicate that emergency configuration support is required for a 3rd party battery backup unit. The string specifies whether the trigger comes from the AC/DC CAN node or site input. If set to '##ACDC_FAULT', the trigger is expected from the corresponding ENVABTSE object's site input. Emergency configuration remains active until all trigger sources stop their alarms.
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Siemens bss 66
This document provides technical specifications for several base station systems including carrier frequency, channel number, and maximum radio frequency (RF) power output for both Gaussian Minimum Shift Keying (GMSK) and 8PSK modulation schemes. The base station systems listed vary in control unit type and have maximum RF power output values ranging from 8.5 watts to 51.3 watts depending on frequency band and modulation type.
Siemens bss 69
This document provides an overview of the technical description of the BS-240/241 Base Station System. It includes abbreviations for various components of the base station system such as the Base Core Controller, Diversity Amplifier Multi Coupler, Edge Carrier Unit, and High Power Duplexer Unit. The base station system supports wireless technologies including GSM, GPRS, EDGE, and WCDMA.
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