smart antenna
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17-08-2010, 06:08 PM

i am pooja meena from electronics enggineering. i am a beginner for the topic "smart antenna" and i have no base for i would be glad if you could help me with the seminar and presentation report and related knowledge.i expect you to help me throughout the seminar and presentation of mine.My topic is "SMART ANTENNA".and i need a report of atleast 40 pages.

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Active In SP

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17-08-2010, 08:56 PM

this thread has smart antenna full report:
Use Search at wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
seminar addict
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18-01-2012, 10:06 AM

to get information about the topic smart antenna full report ,ppt and related topic refer the link bellow



project girl

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05-11-2012, 03:11 PM

Smart Antenna

.pdf   Smart Antenna.pdf (Size: 545.36 KB / Downloads: 21)


One of the most rapidly developing areas of communications
is “Smart Antenna” systems. This paper deals with the principle and
working of smart antennas and the elegance of their applications in various
fields such a 4G telephony system, best suitability of multi carrier
modulations such as OFDMA etc.
This paper mainly concentrates on use of smart antennas
in mobile communications that enhances the capabilities of the mobile and
cellular system such a faster bit rate, multi use interference, space division
multiplexing (SDMA),increase in range, Multi path Mitigation, reduction
of errors due to multi path fading and with one great advantage that is a
very high security. The signal that is been transmitted by a smart antenna
cannot tracked or received any other antenna thus ensuring a very high
security of the data transmitted. This paper also deals the required
algorithms that are need for the beam forming in the antenna patters.


What is a smart antenna?

A smart antenna is an array of antenna elements connected to a digital
signal processor. Such a configuration dramatically enhances the capacity of a wireless link
through a combination of diversity gain, array gain, and interference suppression. Increased
capacity translates to higher data rates for a given number of users or more users for a given
data rate per user.
Multipath paths of propagation are created by reflections and scattering. Also, interference
signals such as that produced by the microwave oven in the picture, are superimposed on the
desired signals. Measurements suggest that each path is really a bundle or cluster of paths,
resulting from surface roughness or irregularities. The random gain of the bundle is called
Multipath fading.


The smart antenna works as follows. Each antenna element "sees" each
propagation path differently, enabling the collection of elements to distinguish individual
paths to within a certain resolution. As a consequence, smart antenna transmitters can encode
independent streams of data onto different paths or linear combinations of paths, thereby
increasing the data rate, or they can encode data redundantly onto paths that fade
independently to protect the receiver from catastrophic signal fades, thereby providing
diversity gain. A smart antenna receiver can decode the data from a smart antenna transmitter
this is the highest-performing configuration or it can simply provide array gain or diversity gain to the desired signals transmitted from conventional transmitters and suppress the
No manual placement of antennas is required. The smart antenna
electronically adapts to the environment by looking for pilot tones or beacons or by
recovering certain characteristics (such as a known alphabet or constant envelope) that the
transmitted signal is known to have. The smart antenna can also separate the signals from
multiple users who are separated in space (i.e. by distance) but who use the same radio
channel (i.e. center frequency, time-slot, and/or code); this application is called Spacedivision
multiple access (SDMA).

Spatial Structure Methods:

As mentioned before, spatial structure methods exploit the information in the
steering vector ..»._¼. The spatial structure is used to estimate the direction of arrivals (DOAs) of
the signals impinging on the sensor array. The estimated directions of arrivals are then used
to determine the weights in the pattern forming network. This is called beam forming. Spatial
structure methods only exploit spatial structure and training signals and the temporal
structure of the signals is ignored. In the following an overview will be given about the three
main spatial structure methods, namely conventional beam forming methods, maximum
likelihood estimation and the so-called subspace-based methods. For simplicity, the vector
channel model used here (and everywhere in the array processing literature for spatial
structure methods) is a spatial-only vector channel.

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