Translating advanced radio standards into commercially viable communication devices presents numerous challenges, with one major obstacle being the difficulty of adapting products to multiple link-level standards and bandwidths through simple modifications. This limitation shortens the commercial lifespan of hardware, which in turn influences design parameters. In short, wireless handsets that cannot adapt to technological or market changes will struggle to justify engineering investments, a crucial requirement for their survival in a competitive environment. Software Defined Radio (SDR) offers a comprehensive set of radio technologies that can be dynamically programmed to support a wide range of waveforms, meet emerging connectivity standards, introduce new communication protocols, and enhance performance while delivering new services. The U.S. military has already adopted SDRs, equipping soldiers with radios that allow them to wirelessly download software modules and connect with various military systems using different waveforms and frequencies. Can SDR bring similar benefits to commercial wireless handset manufacturers? These vendors face not only short product life cycles and diverse equipment standards but also high cost sensitivity. While SDR appears to offer off-the-shelf solutions, it faces significant challenges when it comes to designing and implementing optimized systems. In general, a hardware platform that is flexible enough to support various software features often requires expensive components or consumes excessive power, or both. Is there a way to break this cycle of trade-offs between performance and cost? Of course, there's strong motivation to do so. At the other end of the network, base stations could see considerable returns. However, due to the short product life cycle of mobile phones, a direct software solution isn't as appealing as it is for wireless base stations, which are typically more expensive and have a longer expected lifespan. Replacing dedicated waveform processing hardware with software can save operators hundreds of thousands of dollars over the lifetime of a base station. But the design goals of mobile phones differ from those of base stations. A phone must support built-in features that allow users to access new services and receive effective signals during international travel. This requires the device to be capable of receiving and decoding various waveforms across multiple bandwidths. Infrastructure doesn’t need to support multiple standards, but it must evolve with existing ones over time. It should be able to “provide a CD†for the base station and then install software updates. These upgrades can modify an established waveform standard or add new features by introducing new protocols. Supporting multiple specifications is closely tied to the specific hardware architecture, which leads to the development of new hardware platforms from specification to deployment. That’s why choosing the right hardware components can make a big difference in the design process. The faster a signal is digitized, the quicker software modules can adapt to different requirements. Analog-to-digital conversion offers opportunities within the overall design trade-offs. This can be achieved by optimizing power and cost based on the number of communication channels that need to be processed to meet specific needs. For example, more channels may be allocated for web browsing than for voice calls. Pentek’s solution (Figure 1) involves replacing standard hardware components with FPGAs that can perform specialized functions. “If the FPGA can be programmed to handle digital inputs and its processing power matches that of several standard DSPs, the overall cost and power consumption will definitely be significantly reduced,†said Rodek Hosking, vice president of Pentek. TI took a different approach by focusing on building flexible, standard hardware to handle the growing demands of waveforms, bandwidths, and protocols. “We started doing this a few years ago,†said Bill Krenik, CTO of TI’s Wireless Division. “Mobile phones now require extended functionality to manage new bandwidths, and integrating this capability into the hardware platform while using software for control offers better cost performance.†TI has improved its manufacturing processes to meet these needs. Its current 65nm process can integrate hardware for multiple standards, and the company expects to move to 32nm as demand increases in the coming years. According to TI, this not only allows for more standards to be integrated but also reduces overall power consumption. Is modeling and simulation really helpful? The risk of creating a hardware platform that lacks the ability to support future or unknown communication features is hard to predict until those features are implemented in software. Designers may have to deploy a hardware platform only to find out later that it lacks the performance or battery life needed to support the required features. In such cases, the platform would need to be retired before further development can proceed.
Advantage
* Nova MSD 300 sending card and Nova mrv328 receiving card
* Cabinet size:640x1920mm
* Kinglight/Nationstar LED Lamp, Refresh rate:1920-3840hz
* High brightness up to 2000cd/sq.m, even in the sunlight conditions can see clear, but low power consumption to save the electric power cost.
* High debugging brightness and no damage to gray scale, achieving the debugging technology for nice image.
* Passed the TÃœV,FCC,ROHS,CE cetification.
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1. Utra Thin and Light weight, Cabinet weight only 19KG and 86mm thickness.
2. In direct sunlight, the outdoor LED Display can be high-definition and high-brightness, high refresh rate, high contrast
3. Can withstand high and low temperature, can be used in extremely harsh environment
4. Modular design, Front and Rear maintenance system available, Separate and exchangeable power and data unit can be easily removed for easy maintenance
5. Outdoor IP65 is waterproof, dustproof and corrosion proof, ensures smooth and reliable operation under variable and extreme weather conditions.