MIMO system

[Ajay Vyas]

Hi
Any body worked or working on MIMO system or Wireless link or channel on the optisystem platform

[aasif bashir dar]

hi ajay,
previously these are post which relate to multiple input multiple output.
1.https://optiwave.com/forums/topic/optical-mimo/
2.https://optiwave.com/forums/topic/mimo-fso/
3.https://optiwave.com/forums/topic/2×2-mimo-using-owc/
any of them may be concerned with your topic.

with regards

[Aabid Baba]

Hello ajay,
As far as Wireless link is concerned in optical system you can refer to Free Space optics. You can start by the sample files available in the OptiSystem sample files in the free space optics folder. There are two examples in the folder, one for a free space optic channel and one for a optical wireless channel. The systems are quite simple and therefore suitable for your purpose.

Regards

[alistu]

Hi Aabid,

I believe the most challenging part of implementing the system Ajay wants to implement in OptiSystem is the MIMO part, where MIMO signal processing is a considerable issue. I would be grateful of you please share any information you have regarding the MIMO implementation in OptiSystem.

Regards

[Aabid Baba]

hi Ajay you can also visit the following link for above mentioned topic.

Free Space Optics (FSO)

[prakash jat]

hi sir
we can develop mimo in optisystem but we need little bit help of matlab

[alistu]

Hi Ajay,

I also agree with prakash on this. optiSystem library seems to be lacking components regarding multimode, and especially few-mode fibers compared to the components available for the conventional single mode communications. I also cannot think of any currently available component for MIMO processing at the receiver. So it seems Matlab co-simulation should be used in your case.

Regards

[FAYIQA NAQSHBANDI]

Hi Ajay

Are u trying to implement an optical MIMO system ?
It is possible to develop an optical MIMO system in optiwave.
You can simply use an array of transmitters and recievers.

Or else you can even do it with a single tunable transmitter and a tunable reciever.

Regards

[alistu]

Hi Fayiqa,

An important feature of MIMO comunications is the “Multipath Propagation” feature that makes it different from a simple multipoint-to-multipoint communication architecture, which seems to have mistaken with MIMO (MIMO is of special interest in optical systems with multi-mode fibers).

Regards

[FAYIQA NAQSHBANDI]

Hi Alistu

Alrite.May be i am mixing the two then.Multi path propagation will then of course require the use of multi mode fibers.
.
Ajay..you will have use matlab for desining a part of your MIMO system then.

Thanks and Regards

[Rajguru M. Mohan]

Hi Ajay,
You have asked about one of most latest technologies.
I think you have been talking about Optical MIMO and its implementation in optisystem
An optical multiple-input multiple-output (MIMO) communication system uses multiple LED-based transmitters and multiple receivers to transfer parallel streams of data. As compared to a single-transmitter single-receiver system using the same amount of signal power, a MIMO system can provide higher data rates with fewer transmission errors and better reliability.

I want to discuss advantage of coherent optocal MIMO (COMIMO) system as:
Advantages of COMIMO
Optical MIMO is based on the analogy between multipath
fading in wireless channels and modal dispersion in MMF and allows transmission of multiple data channels simultaneously
through a single fiber. Furthermore, selective modal launching requires
a time-invariant channel, for which one must also have an
accurate channel model a priori. Another distinguishing feature
is that MIMO signal processing requires detection of both
amplitude and phase information, in contrast to pure intensity
detection used in conventional fiber-optic links. The tremendous advantages afforded by COMIMO for MMF
communication are possible through advanced DSP. The use
of DSP to enhance the performance of communication links
is well established.

Thanks,

[Rajguru M. Mohan]

Hi,
I also want to discuss three different types of optical MIMO systems:
1. λ-MIMO: This system is implemented using a single luminaire composed of LEDs that emit different colors of light. Each LED acts as a different transmitter. Thus the parallel data streams can be transmitted over different colors of light. The receiver for this system implements optical filters to recover the signals transmitted over each color.

2. s-MIMO: This system is implemented using multiple luminaires that are placed at different locations on the ceiling. Each luminaire is composed of the same type of LED and thus emits the same color of light. In this case, the data streams are separated spatially because they each originate at a different spatial location. A ‘camera-like’ receiver can then separate the different signal streams and recover data.

Optical MIMO Communication Systems

An optical multiple-input multiple-output (MIMO) communication system uses multiple LED-based transmitters and multiple receivers to transfer parallel streams of data. As compared to a single-transmitter single-receiver system using the same amount of signal power, a MIMO system can provide higher data rates with fewer transmission errors and better reliability.

MImo Image

There are three different types of optical MIMO systems:

1. λ-MIMO: This system is implemented using a single luminaire composed of LEDs that emit different colors of light. Each LED acts as a different transmitter. Thus the parallel data streams can be transmitted over different colors of light. The receiver for this system implements optical filters to recover the signals transmitted over each color.

2. s-MIMO: This system is implemented using multiple luminaires that are placed at different locations on the ceiling. Each luminaire is composed of the same type of LED and thus emits the same color of light. In this case, the data streams are separated spatially because they each originate at a different spatial location. A ‘camera-like’ receiver can then separate the different signal streams and recover data.

3. h-MIMO: This system is a hybrid of the above two systems. It uses multiple luminaires, each composed of different colored LEDs to transmit signals that are separated in color and space. A ‘camera-like’ receiver that can distinguish different colors can then separate the different signal streams and recover data.

Thanks,

[Hamza Ali Abbas Khan]

Hello Rajguru M Mohan.
As you said that there are three different types of optical MIMO systems viz:

λ-MIMO: This system is implemented using a single luminaire composed of LEDs that emit different colors of light. Each LED acts as a different transmitter. Thus the parallel data streams can be transmitted over different colors of light. The receiver for this system implements optical filters to recover the signals transmitted over each color.
s-MIMO: This system is implemented using multiple luminaires that are placed at different locations on the ceiling. Each luminaire is composed of the same type of LED and thus emits the same color of light. In this case, the data streams are separated spatially because they each originate at a different spatial location. A ‘camera-like’ receiver can then separate the different signal streams and recover data and
h-MIMO: This system is a hybrid of the above two systems. It uses multiple luminaires, each composed of different colored LEDs to transmit signals that are separated in color and space. A ‘camera-like’ receiver that can distinguish different colors can then separate the different signal streams and recover data.

Can you tell me how to implement these systems in optisystem? Do you have any example. I would love if you share it.
Thank you

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