Siemens bss 69
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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.
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This document discusses technical specifications for a base station system. It describes reducing maximum transmitting power for certain carrier frequencies in order to comply with FCC requirements for the US market. The power is decreased for corner frequencies in the 850MHz and 1900MHz bands by evaluating the mobile country code and reducing output depending on the carrier unit hardware type. Tables list the resulting maximum RF power output values for different modulation schemes and hardware configurations.
Siemens bss 64
This document describes a base station system that uses multiple carrier frequency bands and transmission diversity time delay operation between pairs of co-located control units (CUs). The CUs are connected via an antenna combiner such that even numbered CUs use one primary antenna and odd numbered CUs use a secondary antenna. Each CU pair transmits the same carrier frequency simultaneously, with the slave CU transmitting a delayed signal to provide diversity. Transmission diversity may be disabled for certain timing-sensitive signal bursts.
Siemens bss 63
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The document provides technical information about a base station system. It discusses:
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Siemens bss 61
The document discusses antenna diversity techniques used in base station systems, including switched combining and maximum ratio combining. It describes the key components used for transmitting and receiving paths, including antennas, combiners, multicouplers and duplexers. Antenna diversity provides a second receive path to improve quality by using techniques like switched combining that select the best receiver path, or maximum ratio combining that optimally combines both paths.
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. It has a modular structure that allows flexibility in configuration.
Siemens bss 68
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The document discusses the power supply and battery backup system for a base station. It contains one or two frames with AC/DC rectifier modules that can supply power from 230V AC or 207V AC sources. The AC/DC system charges and monitors different battery types to provide backup power. It can switch off DC outputs if temperatures go out of range and allows hot plugging in or out of components. The backup batteries guarantee continuous operation for a certain time if the main power breaks down or the AC/DC system fails. The battery backup time can be extended using an emergency configuration feature.
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.
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Siemens bss 69
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