TD-SCDMA X-Series Measurement App, Traditional UI N9079EM0D

Keysight TD-SCDMA

X-Series Measurement App, Traditional UI N9079EM0D

Technical Overview

– TD-SCDMA RF transmitter measurements

– HSDPA/HSUPA/8PSK modulation and code domain analysis support

– Demodulation availability of code channel with phase shift or rotation for multi-carrier TD-SCDMA signals

– One-button tests with pass/fail limits per 3GPP standard

– Hardkey/softkey manual user interface and SCPI remote user interface

– Built-in, context sensitive help

– Flexible licensing provides the option of using perpetual or time based licenses with one or multiple signal analyzers

TD-SCDMA Measurement Application

The TD-SCDMA measurement application transforms the X-Series signal analyzers into standard-based TD-SCDMA transmitter testers by adding fast, one-button RF conformance measurements to help you design, evaluate, and manufacture your TDSCDMA devices. Software capability is further enhanced by adding support to phase shift or rotation for multi-carrier TD-SCDMA signals, allowing you to stay on the leading edge of design and manufacturing challenges.

X-Series measurement applications can help you:

– Gain more insight into device performance with intuitive display and graphs for your application. Select from our library of over 25 different measurement applications.

– Ensure that your design meets the latest standard. Updates are made to the X-Series measurement applications as standards evolve.

– Apply the same measurement science across multiple hardware platforms for consistent measurement results over your design cycle from R&D to production.

– Choose the license structure that meets your business needs. We provide a range of license types (node-locked, transportable, floating or USB portable) and license terms (perpetual or time-based).

TD-SCDMA Technology Overview

Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) combines FDMA, CDMA and TDMA technologies. Unlike W-CDMA and cdma2000® technologies, this TDD standard transmits and receives on the same frequency, which greatly increases spectrum efficiency. Because TDSCDMA effectively handles symmetrical and asymmetrical traffic, it is ideal for data-intensive applications, such as mobile Internet access and multimedia applications.

TD-SCDMA was proposed by China Wireless Telecommunication Standards group (CWTS) and approved as a 3G technology by ITU in 1999. The TDSCDMA standard now is fully supported by 3GPP and China Communication Standards Association (CCSA). The 3GPP TD-SCDMA standard is also known as the low chip rate (LCR) option of TDD, which is included in the 3GPP Universal Terrestrial Radio Access (UTRA) as the UTRA-TDD option.

In combination of Time Division Multiple Access (TDMA) and Time Division Duplex (TDD), the TD-SCDMA technology is based on the backbone of TDMA-TDD operation which significantly improves network performance by allowing radio resources to process network traffic in both directions, per uplink and downlink. There are 7 time slots (numbered 0 through 6) in a single 5 ms long frame, and within each time slot there are up to 16 code channels that are available to allocate to a single user or to distribute among multiple users.

Time division duplexing is used to separate uplink and downlink periods in a given time frame. Therefore, a resource unit (RU) is defined by a frequency, time slot, and code channel with spreading factor. The basic resource unit uses a spreading factor of 16. In TD-SCDMA, the chip rate is 1.28 Mcps and each carrier signal occupies 1.6 MHz bandwidth.

Since the adoption of TD-SCDMA by the 3GPP body, the standard has continued to evolve. As with W-CDMA, the high-speed downlink packed access (HSDPA) and the high-speed uplink packed access (HSUPA) specifications for TD-SCDMA were added into 3GPP Release 5 and, respectively, HSPA+ features for TDD are part of 3GPP Release 8. Meanwhile, the 3GPP has specified UMTS Long Term Evolution (LTE) TDD mode as the evolution patch for TD-SCDMA, which is also referred to as TD-LTE.

Key specifications and differences of TD-SCDMA, TD-HSPA and TD-HSPA+ are summarized in Table 1.