Available Features (TD-SCDMA)

Features applicable to TD-SCDMA demodulation:

• Standard Demodulation preset:

  • 3GPP N-TDD Time 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. 1.28Mcps

• 1.28 MHz Megahertz: A unit of frequency equal to one million hertz or cycles per second. variable (user definable) chip rate.

• Single code domain layer or composite code-domain power and code-domain error displays (the composite display shows all code layers simultaneously). Code-domain power can be normalized to display the code-domain power relative to the total signal power in the code domain.

• Single channel time-domain displays, such as IQ measured, IQ reference, IQ magnitude/phase error, and error vector traces.

• Composite time-domain displays, such as IQ measured time, IQ magnitude or phase error, and error Vector time traces.

• Adjustable filter Alpha (default 0.22)

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

• Measurement offset and interval (similar to time gating) used to select specific data slots for analysis.

• Pilot or Midamble Subframe Synchronization reference (Midamble for Uplink traffic timeslots only.)

• Time gating is not available (does offer measurement offset/interval feature).

• Averaging is available only for code domain trace data and is only applied to the numeric error summary data in the symbol table, as follows:

  • rms (video) computes an average of each rms error update in the table.

  • rms exponential is like rms (video) except that averaging continues past the average count with an exponential weighting.

  • peak hold/continuous peak hold keeps track of the peak rms error of each update in the table.

  • Time and time exponential averaging are not available.

• Average types available for the pre-demodulated spectrum, code domain power and code domain error trace data results.

  • rms (video)

  • rms exponential

  • peak hold/continuous peak hold

• Features that are applicable to Digital Demod but not available with TD-SCDMA demodulation:

  • Measurement/Reference filter

  • Pulse and Sync search

  • Equalization Filter

See Also

Setting up a TD-SCDMA measurement

Optional Measurement Software

About TD-SCDMA Demodulation