Available Features (LTE)

89601BHGC (89601B-BHD) LTELong Term Evolution FDDFrequency Division Duplex: A duplex scheme in which uplink and downlink transmissions use different frequencies but are typically simultaneous. and 89601BHHC (89601B-BHE) LTE TDDTime Division Duplex: A duplexing technique dividing a radio channel in time to allow downlink operation during part of the frame period and uplink operation in the remainder of the frame period. Modulation Analysis provide the following modulation analysis capabilities:

• Support for uplink and downlink signals

• Standard bandwidth presets for all bandwidths specified in the standard: 1.4, 3, 5, 10, 15, and 20 MHzMegahertz: A unit of frequency equal to one million hertz or cycles per second.

• Setup files for all E-UTRAEvolved Universal Terrestrial Radio Access Test Models and macros for selecting test model and bandwidth

• Auto-generated limit lines for verifying Spectral Flatness and In-band Emissions using the Per Slot Channel Frequency Response and In-band Emissions traces, respectively

• Autodetection of cyclic prefix length, Cell ID Group and Sector, Reference Signal PseudoRandom Sequence (RS-PRS)

• Power-based autodetection of downlink resource block modulation type and grouping into separate user channel mappings (for PDSCHPhysical Downlink Shared Channel on C-RSCell-specific RS antenna ports)

• PDCCHPhysical Downlink Control Channel-based autodetection of downlink allocations (for PDSCH on C-RS antenna ports)
• Autodetection of signal parameters from PBCHPhysical Broadcast Channel, PCFICHPhysical Control Format Indicator Channel, and PDCCH

• Autodetection of uplink channels and grouping into a single user mapping

• Support for custom user allocations for uplink and downlink

• Antenna beam pattern traces for single and dual-layer UE-RSUEUser Equipment (e.g. cell phone)-specific Reference Signal beamforming with support for up to 8-antenna beamforming

• Separate measurement results and display for signals and user channels: C-RS, DM-RSDeModulation Reference Signal (LTE), MBSFN-RSMulticast-Broadcast Single Frequency Network Reference Signal, P-SSPrimary Synchronization Signal, P-RSPositioning Reference Signal, PBCH, PCFICH, PHICHPhysical Hybrid ARQAutomatic Repeat Request 1) A distinct unit of data that is carried on an ARQ-enabled connection. Such a unit is assigned a sequence number, and is managed as a distinct entity by the ARQ state machines. Block size is a parameter negotiated during connection establishment. 2) automatic retransmission request - A signal used in digital communications systems used to signal the transmitting device to retransmit a block of data. Indicator Channel, PDCCH, PDSCH, PMCHPhysical Multicast Channel, PUCCHPhysical Uplink Control Channel, PUSCHPhysical Uplink Shared Channel, PRACHPhysical Random Access Channel, S-SSSecondary Synchronization Signal, SRSSignaling Reference Signal, UE-RS, as well as non-allocated subcarriers

• Decoded channel information for PBCH, PCFICH, PDCCH, and C-RS-based PDSCH
• Ability to view information bits from control and shared channels at different points in the receiver chain (such as after descrambling, deratematching, decoding, etc.)

• Measurement offset and interval (similar to time gating) used to select specific data intervals for analysis. Measurement offset and interval specified in slots+symbols

• Analysis start boundary specified as Frame, Half-Frame, or Subframe for downlink and as Frame, Half-Frame, Subframe, or Slot for uplink

• Multi-frame analysis for single-antenna, downlink, TDD frame type 2 signals

• Variable (user definable) time scaling for non-standard symbol rates

• Synchronization to P-SS or C-RS for downlink; synchronization to PUSCH DMdirected mesh: The realizations of a physical mesh using substantially directional antennas. See also: mesh-RS, PUCCH DM-RS, SRS, or PRACH for uplink

• Selectable symbol-by-symbol pilot (reference signal) tracking for timing, amplitude, and phase

• 3GPP EVMError vector magnitude (EVM): A quality metric in digital communication systems. See the EVM metric in the Error Summary Table topic in each demodulator for more information on how EVM is calculated for that modulation format. Minimization supported for uplink and downlink: amplitude, frequency, and timing. For uplink, IQ Offset EVM Minimization is also supported.

• Definable shared channel and control channel/signal power boosts

• Adjustable symbol FFTFast Fourier Transform: A mathematical operation performed on a time-domain signal to yield the individual spectral components that constitute the signal. See Spectrum. locations and EVM window length for OFDMOrthogonal Frequency Division Multiplexing: OFDM employs multiple overlapping radio frequency carriers, each operating at a carefully chosen frequency that is Orthogonal to the others, to produce a transmission scheme that supports higher bit rates due to parallel channel operation. OFDM is an alternative tranmission scheme to DSSS and FHSS. symbols

• Support for autodetected or manually specified PDCCH per-slot allocations

• Support for 2, 3, or 4 antenna downlink MIMOMultiple Input, Multiple Output: A physical layer (PHYPhysical Layer) configuration in which both transmitter and receiver use multiple antennas. signals using a combination of Tx Diversity and Spatial Multiplexing precoding

• MIMO performance metrics including EVM, Common Tracking Error, frequency error, relative power, timing and phase metrics for individual measurement channels (based on C-RS)

• MIMO traces containing channel frequency response, impulse response, common tracking error information, and condition number for each of the C-RS/Rx paths

• Support for Custom RS-PRS

• Support for uplink signals with subcarrier 0 at either DC or 7.5 KHz (with or without phase reset after each symbol)

• Frequency-domain displays, such as IQ measured, IQ reference, and error vector traces

• Composite time/frequency-domain display option for SC-FDMASingle Carrier - Frequency Division Multiple Access signals

• Mirrored frequency spectrums can be flipped to remove the effects of high-side mixing.

• Averaging available for a variety of trace data and most numeric error summary, frame summary, and MIMO info table data:

  • rms (video) - computes an rms average from the specified number of measurement sweeps

  • rms (video) exponential - similar to rms (video) except that averaging continues past the average count with an exponential weighting

  • continuous peak hold - holds the peak value of all the sweeps

• Support for Direct Calculation for Time Domain Input mode.

See Also

About LTE Modulation Analysis

Setting up an LTE Measurement

About Optional Measurement Software