2. OUTLINE:-
INTRODUCTION
NEED OF X-MAX TECHNOLOGY
OVERVIEW
ARCHITECTURE
WORKING PRINCIPLE
ADVANTAGES & DISADVANTAGES
APPLICATIONS
CONCLUSION
REFERENCE
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3. INTRODUCTION:-
X Max is a fixed and mobile wireless broadband system that
includes a complete product line of high-performance access
points, fixed and mobile personal WiFi hotspots, mobile
switching centers (MSC) as well as network management and
deployment tools. xG’s unique and patented protocol
outperforms WiFi , WiMax and traditional cellular technologies
like LTE in shared and interference prone radio bands. The
xMax over the air waveform has been specifically designed for
use in a deterministic (i.e. fixed low latency) cognitive radio
network. This waveform, in conjunction with its purpose built
Media Access Control (MAC) layer, offers capabilities and
performance not found in other wireless solutions.
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4. NEED OF THIS TECHNOLOGY:-
X Max is designed to prioritize voice by delivering dedicated
timeslots and bandwidth to every user.
This approach guarantees a minimal and fixed latency for
every call, which is an essential factor for any high Quality of
Service (QoS) mobile VoIP system.
This is in contrast to technologies like Wi-Fi and WiMAX,
both of which are contention-based "best effort" delivery
systems that are limited by scalability constraints.
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5. TECHNOLOGY OVERVIEW:-
xMAX technology : xMax’s standards-based IP architecture
minimizes network deployment.
Using field-proven cognitive radio technology, xMax enables
the delivery of mobile services in both licensed and
unlicensed bands.
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7. xMAX CELULAR ARCHITECTURE:
The following are the major components of the system:
xMod
xAp
xMSC
x Monitor/x Drive
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8. XMod:-
Xmod : The xMod is a small battery that
bridges the COTS end user device to the
wideband transport layer of the xMax
system.
Devices connected via secure Wi-Fi links.
The xMod can deliver up to 3.5Mbps to
the connected end user device(s).
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9. XAp:-
Xap : The xAP acts as a compact, high-
performance base station and wirelessly
connects to the xMod using the xMax cognitive
networking waveform.
Each xAP can deliver up to 14 Mbps to its
associated xMods.
xAPs may be deployed individually or in
clusters of up to 9 xAPs to increase total
throughput.
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10. XMSC:-
The xMSC acts as both a base
station controller and aggregation
point for the connected xAPs.
The xMSC is typically connected to
the worldwide Internet.
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11. x Monitor/x Drive:-
xMonitor is a component of the xMax-xMSC that monitors the status and
health of xMax network elements. It provides end-to-end IP network
management and monitoring services, services, allowing support
personnel to quickly gather information about xMax networks.
xDrive is a drive mapping utility designed to gather, display, and log
performance statistics from xMod and xVM mobile hotspot devices. It
allows field technicians to map the coverage of a deployment of xMax
access points (downlink), as well as providing user-to-network (uplink)
statistics.
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13. ADVANCED COGNITIVE SENSING:-
Conventional, or “dumb” radios, have been designed with
the assumption that they were operating in a spectrum band
that was free of interference. As a result, there was no
requirement to endow these radios with the ability to
dynamically change parameters, channels or spectrum bands
in response to interference.
xMax cognitive radios can identify potential impairments to
communications quality, like interference, path loss,
shadowing and multipath fading. They can then adjust their
transmitting parameters, such as power output, frequency,
and modulation to ensure an optimized communications
experience for users.
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14. MITIGATING INTERFERENCE:-
Interference works against reliable and efficient wireless
communications. Interference can negatively impact
performance and coverage, and is the chief limiting factor in
high-capacity mobile systems. interference is responsible in
many cases for dropped calls, slow download speeds and
shortened battery life.
xMax leverages proprietary xG developed technology to
implement two key approaches to dealing with interference.
The first is Dynamic Spectrum Access (DSA) and
Second one is by using 2x4 MIMO antenna configurations.
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15. Dynamic Spectrum
Access(DSA):-
xMax uses its real time sensing of
interference on a channel to instantly
change channels when better
frequencies are detected. However,
xMax goes beyond simple DSA by
incorporating sophisticated
interference mitigation (IM) software
that enables xMax to reliably operate
on interference laden channels that
other radio systems could not
operate on. When xG’s interference
mitigation technology is added to its
DSA capabilities, xMax can greatly
increase the capacity of both new
and existing spectrum assets.
2x4 MIMO antenna
configurations:-
The xMax radios employ new and
powerful parallel processing digital
signal processers and computer
processing units (DSP/CPU) that
support speeds up to 50 Giga OPS
(billion operations per second) for
signal processing. This capable
processor, combined with 2x4 MIMO
antenna configurations, enables the
xMax system to use patent-pending
spatial processing software to
remove unwanted interference from
the target xMax signals. Each xMax
cognitive radio can simultaneously
mitigate up to 24 mobile sources of
interference or jamming. By using
xMax’s multi antenna technology to
separate unwanted interference from
desired xMax signals.
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16. ADVANTAGES:-
Quality of service (QoS) to support long ranges mobile VoIP.
Deterministic latency on wireless links for voice packets.
Header compression.
Zero latency network configuration.
Soft hand- off mechanism.
Exclusive service territories.
No spectrum license costs.
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17. DISADVANTAGES:-
You have to be connected to a computer to use it.
There is an issue with quality , as cellular networks are not
designed for internet voice traffic.
The network uses available free spectrum , rather than
licensed spectrum and an all-IP architecture that is less
expensive to operate than traditional networks.
The phone eventually overheated , but it seems that mobile
VOIP could not be too far away.
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19. CONCLUSION:-
By using low power we can provide high data rate over longer distance.
Broad coverage is possible.
service provided to more number of customers using free licensed
spectrum which is cost effective.
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