This document discusses evaluating the expected coverage and capacity of millimeter wave systems. It introduces millimeter wave technology and its potential uses. The authors aim to propose a new architecture to bridge the gap between wireless and optical links and increase data rates by an order of magnitude of 10-40 Gbps. They are dealing with problems of line-of-sight communication, blocking by walls, and atmospheric attenuation of millimeter waves. Their approach uses MIMO, spatial multiplexing, and adaptive beamforming to help solve these issues.

1. EVALUATING THEEVALUATING THE
EXPECTED COVERAGEEXPECTED COVERAGE
AND CAPACITY OF MMAND CAPACITY OF MM
WAVE SYSTEMWAVE SYSTEM

2. Group members
• Syed sajid ali
• Raza ullah
• Shoaib khan

3. INTRODUCTION
• Discovered by Dr Jagdish Chandra
Bose in 1900.
• Its range in electromagnetic spectrum
is from 30 to 300 Ghz.
• Its wavelength is from 10mm to 1mm.
• .

4. • Lies between microwaves and infrared.
• Promising technology for future cellular
systems.
• Can also be used in weapon system security
screening, medical Imaging and scanning
and Aerospace sector.

5. Our aim
• propose a new architecture for bridging
the
• existing gap in speeds between
wireless and optical links
• increase data rates by more than an
order of magnitude 10- 40 Gbps.

6. Problems which we are
dealing in our project
• Communication occur only in LOS.
• Mm waves are blocked by walls.
• Attenuated by fog, rain etc.
• Limited to few kilometer by high free space
loss and atmospheric absorption.

7. Our approach
• For solving above problems we are
using the following approach.
• MIMO
• Spatial multiplexing
• Adaptive Beam forming

8. MIMO

9. • In MIMO we use multiple antennas
simultaneously for transmission and
multiple antennas simultaneously for
reception.
• One primary reason to use multiple
antennas is to improve link quality and
reliability.

10. Spatial multiplexing
• Spatial multiplexing is a multiple
antenna technique that increases the
data rate as compared to single
antenna techniques.
• transmit independent and separately
encoded data signals, so-
called streams, from each of

11. the multiple transmit antennas.
• Space dimension is reused.
• Theoretically, spatial multiplexing can
increase the capacity of the system as
pairs of transmitter and receiver
antennas are added to the system.

12. Adoptive beamforming
• An adaptive beamformer is a system
which performs adaptive spatial signal
processing with an array of transmitters or
receivers.
• The signals are combined in a manner which
increases the signal strength to/from a
chosen direction.

13. • Signals to/from other directions are
combined in a benign or destructive
manner, resulting in degradation of the
signal to/from the undesired direction.