Software Defined Radio Measurement Solutions
Interoperability concerns and high costs, associated with existing communication systems, are driving the integration of software defined radio (SDR) technology into commercial and military wireless systems. On the commercial side, the mobile communications industry has seen the parallel evolution of a wide variety of incompatible radio standards throughout the world and even within specific geographies. Consumers want the ability to use the most reliable service in a given location. Developing a truly international handset is nearly impossible. Multi-mode handsets provide some relief, but with increased cost, higher power consumption and limited flexibility as standards evolve.
On the military side, yesterday’s model of using independent communication systems for different tactical functions simply doesn’t fit with the network-centric warfare model being pursued by virtually every modern military. Today forces are fast, mobile, tightly integrated and closely coordinated, which requires the ability to quickly and freely communicate across organizational boundaries. Additionally, maintaining today’s diverse systems requires a large support footprint with its corresponding high cost. A similar situation exists for public-service organizations, such as law enforcement and fire departments, who also use a large number of non-interoperable radios at federal, state, and local levels.
In the original context, the term software defined radio (SDR) refers to a reconfigurable radio based solely on software and having the analog-to-digital conversion occurring directly at the antenna 1, 2. While practical limitations in the current performance of analog-to-digital converters (ADC) prevent sampling wideband waveforms directly at the antenna, the development of a radio system that can change its operating frequency, modulation, operating bandwidth and network protocol without the need to change the system hardware is highly desirable.
As digital signal processing (DSP) and ADC speeds increase, more of the signal processing will be done digitally. Where a radio once processed analog signals from the RF through to baseband, newer SDR-based systems implement a digital baseband and digital IF with an evolution of moving the transition between the digital and analog domains as close to the antenna as technically possible. However more digital content in the radio leads to new measurement and troubleshooting challenges for the traditional RF designer who now has to deal with the digital signals and bus structures of reconfigurable logic. In addition, DSP and digital hardware designers are now faced with understanding and measuring signal quality in terms of high-level functional performance that includes vector diagrams and error vector magnitude (EVM) metrics.
This application note introduces the SDR architecture and types of analysis tools that are available when measuring the digital, analog and RF sections of a software radio. This note also shows how vector signal analysis tools can be applied across multiple domains when designing and troubleshooting SDR components and systems. Also discussed are vector signal generation and how software radio design has influenced the connection of this predominately RF/analog hardware into the digital domain. Lastly, this note will introduce how instruments and radio hardware can be directly integrated into advanced software simulation tools
|
N5102A 、 N5397A 、 N4850A 、 89600 、 MSO8000 、 B4656A 、 N5115B 、 89400-14A |
|
|
|
|
|
Application note & Design Guide |
|
|
|
|
Please see the document for details |
|
|
|
|
|
|
|
|
|
|
|
English Chinese Chinese and English Japanese |
|
|
December 1, 2017 |
|
|
|
|
|
5989-6931EN |
|
|
7.4 MB |
- +1 Like
- Add to Favorites
Recommend
- Keysight Technologies Acquires Quantum Benchmar, Augmenting Keysight‘s Quantum Portfolio
- Keysight First to Gain OmniAir Qualified Test Equipment Status, Accelerating C-V2X Device Certification
- Keysight First to Gain GCF Approval of Cases for Validating 5G New Radio mmWave Devices in Standalone Mode
- Keysight Massively Parallel Board Test System Selected by LACROIX in Automotive Printed Circuit Board Manufacturing
- Keysight, TIM and JMA Wireless Join Forces to Showcase O-RAN Technology at Mobile World Congress 2021
- Keysight, Xilinx and Cisco Showcase Solutions that Support Smooth Migration from 4G LTE Networks to 5G Open RAN
- Keysight Unveils the First Media Access Control Security Test Solution for High Speed Ethernet
- Keysight, MediaTek Join Forces to Establish 5G Connectivity Based on 3GPP Release 16 Specifications
All reproduced articles on this site are for the purpose of conveying more information and clearly indicate the source. If media or individuals who do not want to be reproduced can contact us, which will be deleted.
Integrated Circuits
Discrete Components
Connectors & Structural Components
Assembly UnitModules & Accessories
Power Supplies & Power Modules
Electronic Materials
Instrumentation & Test Kit
Electrical Tools & Materials
Mechatronics
Processing & Customization
