WCDMA/HSPA+ digital standards

Key Facts

Uplink/downlink signal generation in line with 3GPP FDD Rel. 11
Including HSDPA, HSUPA and HSPA+ physical channels and features
Simulation of up to 4 base stations (BS) or mobile stations (MS)
Support of real-time operation for uplink and downlink channels
Test case wizard for easy test setup in line with 3GPP TS 25.141

WCDMA/HSPA+ signal generation

These digital standard options provide WCDMA/HSPA+ signal generation capabilities in line with 3GPP FDD Rel. 11. This includes all physical channels of 3GPP FDD, HSDPA, HSUPA and HSPA+. All signals are generated either as a combination of the real-time and ARB modes or in ARB mode only (WinIQSIM2™).
Various test models and predefined settings are available to simplify signal generation as far as possible. Furthermore, a test case wizard ensures the easy setup of base station conformance tests. Various graphical displays and setting assistants also support fast and convenient signal configuration.

Quick Links

Available Models

Features & benefits

Support of all physical channels

All WCDMA 3GPP FDD, HSDPA, HSUPA and HSPA+ physical channels are supported. This allows the simulation of up to:

Four base stations (BS) with up to 128 code channels each
Four configurable mobile stations (MS) and up to 128 additional MS with identical configuration in parallel

**Main menu, base station settings (downlink)**

Perfect for BER and BLER measurements

In downlink mode, the P-CCPCH and up to three DPCH can be generated in real time. In uplink mode, real-time simulation is supported for DPCCH and one DPDCH of one mobile station. This allows a 3GPP conformant continuous measurement of BER and BLER in a code channel with PN data. Furthermore, bit and block error rate insertion is supported, enabling the verification of the base station internal BER/BLER calculations.

Test case wizard for easy setup of BS tests

The test case wizard supports the configuration of test signals in line with 3GPP TS 25.141 for base station conformance tests. It offers a selection of predefined settings for wanted and interfering signals based on the defined test cases.

Quick signal configuration

The predefined settings assistant allows quick signal generation for testing amplifiers and other components.
Downlink test models in line with 3GPP TS 25.141 are provided as predefined settings:

Test model 1 with 4/8/16/32/64 DPCH
Test model 2
Test model 3 with 4/8/16/32 DPCH
Test model 4
Test model 5 with 8/4/2 HS-PDSCH (in case of 4 HS-PDSCH with 4 or 14 DPCH)
Test model 6 with 8/4 HS-PDSCH

Graphical signal evaluation

Various graphical displays support fast and easy signal configuration/evaluation:

Code domain display with domain conflict indication
Channel graph
Graphical signal monitoring in real time (I and Q vs. time, frequency spectrum, vector diagram, CCDF and more), including marker functions

**Code domain display, 4 HS-PDSCH and 4 DPCH**

Support of HSPA and HSPA+ physical channels

Simulation of HSUPA and HSDPA physical channels, including HSPA+ features:

HSDPA H-Sets 1 to 12 with channel coding and user-editable H-Set configurations
MIMO support including HSDPA MIMO precoding and HS-DPCCH signaling for user equipment
HSUPA fixed reference channels (FRC) 1 to 8 with channel coding and HARQ feedback simulation
Higher order modulation schemes, 64QAM in downlink and 4PAM in uplink
Continuous packet connectivity (CPC)

**Excerpt from channel table of HSDPA H-Set 8**

Tailored for BS/MS tests

Several other functions are needed for 3GPP standard conformant/compliant test setups:

Dynamic power control support in real-time mode for up to three DPCH in downlink and one mobile station in uplink are essential for RX tests that need closed-loop power control.
In the uplink, the output of the FRC HARQ processes can be controlled in real time using a feedback line from the DUT to allow base station performance tests in line with 3GPP TS 25.141.