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The business of wimax - Pareek D.

Pareek D. The business of wimax - Wiley publishing , 2006. - 330 p.
ISBN-10 0-470-02691
Download (direct link): thebusinessof2006.pdf
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The higher switching speeds that result from the smaller geometries being developed in CMOS are enabling the design of analogue circuits at very high frequencies, with very good gain and linearity. This new capability will allow analogue circuit designs to scale with the digital capabilities predicted by Moore’s law. Analogue solutions implemented in CMOS will achieve high performance, functionality and bandwidth while maintaining low cost, small size, high quality and robust architecture across the wireless market.
The PC industry has always enjoyed the 18 month half-life trend, a corollary of Moore’s law, unlike in communications. For example, PC prices have decreased by half every 18 months, but our communication costs have remained relatively stable over this period. Typically the ‘half-life’ of communication prices has been 5 years. Thankfully, all of that is about to change due to convergence. The new convergence industry will take advantage of traditional PC architectures, two examples being
• CPUs (e.g. Motorola PowerPC and Intel’s Pentium);
• Bus [e.g. PCI, Universal Serial Bus (USB) and IEEE 1394, Firewire].
Consequently, the same ‘price erosion trends’ will be observed, and Moore’s law will apply to convergence networks as well. As routers evolve to multiservice and proprietary hardware migrates to PC-based hardware implementations, and as corporate networking solutions move to the commodity market, the benefits will be reaped by the end user. With the communications industry opening up to new providers, the market will become increasingly competitive. Consumers will soon enjoy this cost cutting, and the aggressively competitive market in our communication hardware and software (Figure 6.3).
System on Chip (SoC)
The future digital lifestyle, which can be best summarized as anytime, anywhere, any device and any content, has raised the need for the development of system with broadband connectivity and a smaller, portable device with low power consumption, wireless connectivity and low cost.
Such a demand requires highly integrated and multifunctional personal devices or consumer electronics (CE), so-called ‘embedded systems’ in consumer space. While SoC technology is rapidly rising to be the most essential technology for future CE, the nature of the CE industry demands that the SoC R&D paradigm be changed.
These devices are multifunctional converged equipment, consisting of various components including modem, video, 3D, CPU/DSP, bus and software. Ignoring other facets like digital camera or video, these devices are capable of using multiple technologies for broadband wireless access.
It is composed of a network layer, I/O (input/output) layer and a processor. What previously were separate components are now merging into one chip, thanks to the SoC technology. A processor platform consists of a CPU, DSP, accelerator, SoC bus and memory (which will not be discussed in this context).
With the growing demand for the processor platform to support multiple communication standards (such as CDMA, W-CDMA, GSM/ GPRS, WLAN 802.11/16/20 and UWB) at a single terminal and provide standard OS (operating system) support, a combination of an efficient processor architecture, high-performance bus and low power consumption is necessary. Thus, the adoption of a programmable, configurable ‘CPU + DSP + accelerator’ architecture is increasingly becoming favourable.
Slave SQN201Q (optional)
Subchannelization SRAM (optional)
Figure 6.3
MAC Accelerators
WiMAX is the first widely backed wireless standard that is both technically capable and has sufficient industry support to disrupt the telecommunications landscape. It is potent enough to turn on its head the connectivity stranglehold of incumbent telecommunication operators.
WiMAX provides an economically viable broadband wireless access technology, and provides extraordinary value to service providers as well as end users. It serves new entrants as well as dominant national incumbent operators with access and backbone infrastructure (Figure 6.4).
DSL and Cable
WiMAX deployment as a last-mile service not only serves residential and enterprise users but also as a backhaul for Wi-Fi hotspots and between the conventional cell towers. There are different opinions on whether BWA will be successful as a last-mile service. Our study lays the groundwork for deploying future BWA systems based on WiMAX Certified products. There are challenges in deploying WiMAX, but it has huge potential to compete on a cost-per-megabyte level with cable and DSL, if both engineering and economics are carefully applied.
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