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Anritsu LTE Solutions - Resource Center

LTE LogoLTE (Long Term Evolution) and LTE Testing

LTE is the first technology designed explicitly for Next Generation Networking (NGN) and is set to become the de-facto NGN mobile access network standard. It takes advantage of NGN capabilities to provide an always-on mobile data experience comparable to wired networks.

  • LTE supports peak data rates of more than 100 Mbps on the downlink when using 20 MHz channel bandwidth, two transmit antennas at the base station and two receive antennas at the User Equipment (UE). LTE also supports peak data rates of more than 50 Mbps on the uplink when using a 20 MHz channel bandwidth; and single transmit antennas at the UE and base station.
  • LTE generates ten to twelve times the throughput on the downlink and eight to ten times the throughput on the uplink relative to 3GPP Release 6.
  • LTE improves spectrum efficiency as defined relative to Release 6. The uplink and downlink capabilities are two to four times the spectral efficiency of High-Speed Packet Access (HSPA).
  • LTE has flexible duplex methods. Both Frequency Division Duplex (FDD) and Time Division Duplex (TDD) are valid spectrum allocations and allow LTE to accommodate various channel bandwidths in the available spectrum.
  • LTE interoperates with W-CDMA, GSM, and CDMA2000 systems. Multimode UEs will support handover to and from these other systems.
  • Legacy technologies such as HSPA+ and Enhanced EDGE will continue to operate within the new network architecture.

LTE Guide & Whitepaper



Downlink Key Features

  • OFDM based, 15 kHz sub-carrier spacing
  • QPSK, 16QAM, 64QAM modulation
  • Variable RF bandwidth, 1.4 - 20 MHz
  • MIMO in the form of transmit diversity or spatial multiplexing
  • Scheduling, link adaptation, HARQ and measurements similar to 3.5G

 

Uplink Key Features

  • Single Carrier FDMA, 15 kHz sub-carrier spacing
  • QPSK, 16QAM, 64QAM modulation
  • Variable RF bandwidth, 1.4 - 20 MHz
  • Scheduling, link adaptation, HARQ and measurements similar to 3.5G
  • Random access procedures


TDD/FDD Access

LTE standards support the use of both TDD (Time Domain Duplex) and FDD (Frequency Domain Duplex) from the same set of standards, and with the same air interface characteristics.

Multiple Input Multiple Out (MIMO)

MIMO is an antenna technology that, together with signal processing, can either increase capacity (spatial multiplexing) or signal-to-noise ratio (transmit diversity) in a radio link.

In LTE using 2x2 MIMO with spatial multiplexing, the user data is separated into two data sets each fed to two transmit antennas and received by two receive antennas. Because of multi-path, each data set travels a distinct RF path with different propagation characteristics. The algorithm used to split and recombine the data allows the system to make use of the independence of these two paths in order to improve throughput. The two data streams occupy the same RF channel at the same time. This doubles the data rate possible on the air interface link.

When using MIMO with transmit diversity, the same user data is transmitted from both antennas, and at each receiver, replicas of the signal are processed.  This duplication enhances signal-to-noise ratio and improves signal robustness.



Anritsu Solutions for LTE Testing

Anritsu offers a complete line of LTE test equipment to ensure the performance and quality of your LTE equipment and networks. Our MD8430A signaling tester is the first complete LTE Base Station Emulator. Couple the MF6900A Fading Simulator with the MD8430A Base Station Emulator to provide a reproducible fading environment that is essential for evaluating LTE. Our high-performance MS269xA Signal Analyzer provides complete LTE uplink and downlink analysis in a one-box platform that includes signal analysis and signal generation. Our MG3700A Vector Signal Generator produces realistic and reproducible LTE signals and our LTE IQProducer software provides a graphical interface that lets the user easily generate LTE-compliant waveforms.



md8430a

MD8430A Signaling Tester - Wireless devices are evolving into content-rich multimedia terminals supporting high-speed communications based on the next-generation LTE standard. The MD8430A Signaling Tester is an essential base station emulator used to develop LTE protocol stacks, chipsets and UEs. It is the perfect test solution for bringing LTE UEs to market as quickly as possible.

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The MX786201A Rapid Test Designer (RTD) software tools give users power to create tests that cannot be done with traditional language-based tools. The Lower Layer Configuration Library and the Reference Library guarantee efficient and effective testing.

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mf6900a MF6900A Fading Simulator - When used with the MD8430A, the MF6900A uses digital baseband processing to assure highly reproducible fading profiles.

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md8470a

MD8470A Signaling Tester - The MD8470A Application Tester is a multi-format tester tailored for both application layer testing as well as detailed protocol testing of wireless devices. The tester supports multiple air interfaces, including GSM/GPRS/E-GPRS, W-CDMA/HSPA, 1xRTT/1xEV-DO, and TD-SCDMA. An easy-to-use GUI called Wireless Network Simulator (WNS) is available for GSM/W-CDMA, enabling easy tester configuration and setup of voice, video, and packet calls, as well as sending and receiving SMS and MMS messages. More protocol-focused UIs are also available for the MD8470A, including C-scenarios for GSM/W-CDMA and TD-SCDMA and various PERL-based tools for 1xRTT/1xEV-DO. Specialized UIs are also available for battery life testing (ETS), handover testing (MNS), and UE-to-UE voice/video/SMS/MMS calls (CNS).

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md8475a MD8475A Signaling Tester - The MD8475A is a base station simulator that helps mobile UE test engineers to conduct full-scale development and whole functional verification for upcoming LTE commercial device supporting legacy communication standards. It supports multi-communication standards worldwide in a single platform (2G to LTE). State-Machine GUI named "WNS (Wireless Network Simulator)" allows users to configure expected test conditions easily without complex text scripts. Also, it provides flexible external control interface (Ethernet and GP-IB) for various user's automated framework. The MD8475A is an all-in-one, multi-system capable platform.
   
md8480C MD8480C Signaling Tester - The MD8480C Signaling Tester is a GERAN/UTRAN Signaling Tester, enabling leading-edge Node B and network simulation for use in a wide range of wireless device applications from R&D to Protocol and RF Conformance Test. The tester is highly configurable with hardware and software options including UTRAN air interfaces from Release 99 to Release 8 as well GSM/GPRS/E-GPRS. Up to 4 UTRAN Node Bs and 2 GERAN BTS's are available in a single MD8480C, each of which can be multiplexed on up to 2 RF's. Multiple user interfaces are available for the MD8480C, including MX848000C C-Scenarios for basic Layer 1/2/3 testing, MX786201A Rapid Test Designer for detailed Layer 1/2/3 testing and Network Acceptance, and MX785220A Protocol Conformance Toolkit software for Protocol Conformance test.

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MT8820C MT8820C One-Box Tester - The MT8820C One-Box Tester is a multi-format 2G to 4G/LTE tester focused on wireless device calibration and physical layer test, with options to test either with or without call processing. The tester includes options for either 1 or 2 RF and baseband engines (Parallel Phone Mode/PPM), and a PPM-equipped unit can be used for purposes ranging from completely parallel testing of 2 wireless devices, 2x2 MIMO, DC-HSDPA, SV-LTE, or SVDO with the correct options. Functional testing is also available, including a mix of voice calls, video calls, and handovers. The MT8820C maintains backwards compatibility with previous generations, including MT8820A or MT8820B, and an upgrade path is available from the MT8820B.

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MT8212E

MT8212/13E Cell Master - The Cell Master MT8212E & MT8213E are compact handheld base station analyzers that have been specifically developed for cell site technicians to meet virtually all of the measurements needs in and around a cell site of 2G, 3G and WiMAX networks.

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mt8221b

MT8221B BTS Master - The BTS Master is Anritsu's high-performance base station analyzer. Designed to support upcoming 4G standards and installed 2G/3G networks, the MT8821B provides a 20 MHz demodulation capability and a 30 MHz Zero-Span IF Output for external demodulation of virtually any wideband signal. In addition, the Vector Signal Generator option available for comprehensive receiver testing has the flexibility to generate two modulated signals plus noise.

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MS272B

MS272xB Spectrum Master - The MS272xB family of handheld spectrum analyzers is designed to conduct highly accurate, cabled and Over-The-Air (OTA) measurements on wireless LAN and cellular signals, including new LTE options introduced in September 2009.  Packages are available for RF Measurements, Modulation Measurements, and OTA measurements to meet a wide variety of LTE field test needs.

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MS2712/13E Spectrum Master - Anritsu's new Spectrum Master has been designed for technicians, installers, field radio frequency (RF) engineers, and contractors who struggle with both keeping track of the growing number of interfering signals and assessing signal quality on a wide range of increasingly complex signals. Easy-to-use, integrated and high performing, the Spectrum Master helps users address those challenges and more. Its feature-rich and compact design helps users comply to regulatory requirements, manage and maximize efficiency, improve system up-time, and increase revenue – all in a rugged and field-proven device designed to withstand even the most punishing conditions.

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ME7834 ME7834 LTE Mobile Device Test Platform - The ME7834 Mobile Device Test platform is a scalable test system with applications ranging from wireless device R&D to Protocol CT and Network Acceptance Test. A basic configuration consists of a signaling tester such as the MD8430A LTE Signaling Tester, along with a user interface such as the Rapid Test Designer (RTD) software, as well as appropriate libraries. Library options for the ME7834L include a wide variety of Protocol CT Work Items for both W-CDMA and LTE, carrier-specific network acceptance libraries for 3 major carriers (with over 17 LTE test package libraries), and several general-purpose libraries for R&D. Hardware may be added to the ME7834 configuration as required by the selected libraries, including the MD8480C Signaling Tester for UTRAN/GERAN, the MD8470A Signaling Tester for 1xRTT/1xEV-DO (with eHRPD), and the MF6900A fader for data performance testing.

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ME7873L ME7873L LTE RF Conformance Test System - The ME7873L LTE RF Conformance Test System offers complete TX, RX, Performance, and RRM test capability conforming to 3GPP 36.521-1 and 36.521-3 in a single scalable test system. The simplest "TX/RX Basic" configuration enables testing of in-channel parametrics, while a full TX/RX/Performance/RRM system enables complete RF characterization of an LTE device. The ME7873L supports multiple bands through it's tunable filter hardware, and upgrade to add an additional band consists of only software. Performance options include 4x2 MIMO, High Speed Train, and MBSFN, and RRM options include LTE to C2K and LTE to W-CDMA handovers. Carrier-specific RF supplementary tests for LTE carriers are also available.

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ME7873L ME7832L LTE Protocol Conformance Test System - The ME7832L is the industry's leading LTE UE protocol conformance test system solution and is based on3GPP TS36.523 for GCF/PTCRB Terminal Certification. It uses the stable and reliable MD8430A Signaling tester as the base station simulator. The system supports all GCF/PTCRB-supported LTE bands. Factory integration of the MD8430A LTE Signaling Tester and GCF Protocol Conformance Test Toolkit into the ME7832L system allows for easy setup and maintenance, and includes cabling, software installation, and system level correction.

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ms269xa MS269xA Series Signal Analyzers -The MS269xA is a One-Box tester that includes a Signal Analyzer, Spectrum Analyzer, Digitizer, and Signal Generator (option) in a hassle-free, plug-and-play solution for next generation signal analysis. Evaluation of FDD and TDD signals is supported with the addition of optional software.

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mg3700a MG3700A Vector Signal Generator - The MG3700A can play LTE waveforms from various sources including simulation software and the output from Anritsu’s IQproducer.  IQproducer can be used to create MIMO waveforms implementing either spatial multiplexing or transmit diversity. FDD and TDD LTE waveforms are supported.

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