Software Defined Radio (SDR) Block Diagram
Schematic Block Diagram for SDR
Software-defined radio (SDR) is a radio communication technology that is
based on software defined wireless communication protocols instead of hardwired
implementations. In other words, frequency band, air interface protocol and
functionality can be upgraded with software download and update instead of a
complete hardware replacement. SDR provides an efficient and secure solution to
the problem of building multi-mode, multi-band and multifunctional wireless
communication devices.
An SDR is capable of being re-programmed or reconfigured to operate with
different waveforms and protocols through dynamic loading of new waveforms and
protocols. These waveforms and protocols can contain a number of different
parts, including modulation techniques, security and performance characteristics
defined in software as part of the waveform itself.
The Benefits of a programmable DSP plus ARM based SoC
Efficient and effective SDR design requires a standard programmable hardware platform that allows designers to navigate these tough system requirements. The Appliations Processors leverage the ARM general purpose processor to complement highly-efficient, programmable TI digital signal processor (DSP) and a rich set of IO to address the needs for software defined radio communication devices.
Complex functions in wireless protocol-specific algorithms are perfectly suited to programmable DSPs since they combine number-crunching power with intelligence to enable multitasking. The DSPs math capability allows it to handle the various modem processing functions like filtering, modulation, demodulation and error correction encoding and decoding.
The ARM926EJ-S™ Processor on the TMS320DM64xx the ARM Cortex™-A8 in the OMAP35xx SoC, as well as the ARM9 and ARM9-plus-DSP architecture of the OMAP-L1x are especially well suited to handle the networking, media access control and applications processing in a wireless radio communication product. The ARM processor also helps address the control functions involved with man machine interface in the radios.
Small Form Factor (SFF) Software Defined Radio (SDR) Development Platform
The TI Small Form Factor (SFF) Software Defined Radio (SDR) Development
Platform provides the entire signal chain hardware from antenna to baseband as
well as a software board support package that supports a complete suite of
software development tools in a single integrated development platform.
With the kit, developers can easily design waveforms as well as create and test
single or multi-protocol radios for applications in public safety,
commercial, Professional Mobile Radio (PMR) and land mobile radio (LMR)
communication systems as well as RFID readers. Additionally, as the platform is
integrated to work with The MathWorks Simulink model-based design tool,
developers have the option to use C/HDL or MATLAB/Simulink to quickly develop
and test proof-of-concept designs and then optimize the architecture for
production.
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