Wall-charts Summarise 3G UMTS Standards

Racal Instruments has devised a set of wall-charts summarising the UMTS layer 1 technical standards as a reference guide for all engineers working on Layer 1 (and higher layers) in mobile communications design and test.

Developed by Robert Robinson ( inset ), Racal’s system technical authority for 3G platform development, the five sheet summary has proved so useful internally that Racal has decided to make it available industry-wide in the form of a wall-chart.

The UMTS layer 1 air interface is described in several 3GPP standards documents. It is often difficult to visualise how all the elements of these standards fit together, or to remember all the details. The five summary diagrams provide a detailed reference guide showing the complete end to end flow of signal processing. Notes are included to describe the key steps and other important details. The diagrams can be used by engineers trying to learn and understand the UMTS standard for the first time, or as aide memoir to those already familiar with it.

The UMTS Release 1999 Air Interface Summary breaks down into
• FDD Mode Downlink Physical Channel Structure – Transport Channels
• FDD Mode Downlink Physical Channel Structure – Layer 1 Generated Channels
• FDD Mode Uplink Physical Channel Structure
• Multiplexing and Channel Coding and Glossary
• TDD Mode Channel Structure

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