5G Channel Models

Hello,

As far as I know the channel standards and physical channel models have
not been determined yet for 5G applications. The works in different
regions are being made in order to simulate and define the effective
channel models in 5G environment. 
Does anyone know the most candidate for channel modeling? It will most
probably be a time-varying channel but is possible that different channel
parameters are being worked on by the research centers.

What is the mathematical model being used for the current 5G studies and
tests?

Thanks in advance! 
---------------------------------------
Posted through http://www.DSPRelated.com

runinrainy <100271@DSPRelated> wrote:

>As far as I know the channel standards and physical channel models have
>not been determined yet for 5G applications. The works in different
>regions are being made in order to simulate and define the effective
>channel models in 5G environment. 
>Does anyone know the most candidate for channel modeling? 

Googling on 3GPP 5G channel model generates a lot of hits.
I have no information as to which is most relevant, but the
cached google result from Huawei dated June 24, 2016 looks pretty
interesting.

You may want to narrow it down to which band(s) you're operating in.

Steve

On Friday, November 4, 2016 at 1:13:14 PM UTC-4, runinrainy wrote:
> Hello,
> 
> As far as I know the channel standards and physical channel models have
> not been determined yet for 5G applications. The works in different
> regions are being made in order to simulate and define the effective
> channel models in 5G environment. 
> Does anyone know the most candidate for channel modeling? It will most
> probably be a time-varying channel but is possible that different channel
> parameters are being worked on by the research centers.
> 
> What is the mathematical model being used for the current 5G studies and
> tests?
> 
> Thanks in advance! 
> ---------------------------------------
> Posted through http://www.DSPRelated.com

3GPP, the 5G standards organization, recently approved a study of channels suitable for 5G.  The report, released as TR 38.900 is available from their ftp archive:

http://www.3gpp.org/ftp/specs/archive/38_series/38.900/

The study should give you a good idea of the current modeling efforts undertaken by industry and academia as well as the direction of 3GPP for 5G systems.

Key takeaways that distinguish the 5G channel from its predecessors are:
- Higher carrier frequencies, millimeter wave up to 100 GHz
- Massive MIMO with beamforming
- Wider bandwidths, up to 2 GHz
- New deployment scenarios, device to device (D2D), vehicle to vehicle (V2V)
- Smaller cells

Some of the key research contributing to the study findings are:
* METIS
Report:
https://www.metis2020.com/wp-content/uploads/deliverables/METIS_D1.4_v1.0.pdf

Simulation model source:
https://www.metis2020.com/documents/simulations/

* NYU wireless
Home page:
http://wireless.engineering.nyu.edu/mmwave-channel-modeling/

Simulation model source:
http://wireless.engineering.nyu.edu/nyusim/

- IEEE
Report:
http://www.5gworkshops.com/5G_Channel_Model_for_bands_up_to100_GHz(2015-12-6).pdf

On Sun, 6 Nov 2016 05:29:37 -0800 (PST), lito844@gmail.com wrote:

>On Friday, November 4, 2016 at 1:13:14 PM UTC-4, runinrainy wrote:
>> Hello,
>> 
>> As far as I know the channel standards and physical channel models have
>> not been determined yet for 5G applications. The works in different
>> regions are being made in order to simulate and define the effective
>> channel models in 5G environment. 
>> Does anyone know the most candidate for channel modeling? It will most
>> probably be a time-varying channel but is possible that different channel
>> parameters are being worked on by the research centers.
>> 
>> What is the mathematical model being used for the current 5G studies and
>> tests?
>> 
>> Thanks in advance! 
>> ---------------------------------------
>> Posted through http://www.DSPRelated.com
>
>3GPP, the 5G standards organization, recently approved a study of channels suitable for 5G.  The report, released as TR 38.900 is available from their ftp archive:
>
>http://www.3gpp.org/ftp/specs/archive/38_series/38.900/
>
>The study should give you a good idea of the current modeling efforts undertaken by industry and academia as well as the direction of 3GPP for 5G systems.
>
>Key takeaways that distinguish the 5G channel from its predecessors are:
>- Higher carrier frequencies, millimeter wave up to 100 GHz
>- Massive MIMO with beamforming
>- Wider bandwidths, up to 2 GHz
>- New deployment scenarios, device to device (D2D), vehicle to vehicle (V2V)
>- Smaller cells
>
>Some of the key research contributing to the study findings are:
>* METIS
>Report:
>https://www.metis2020.com/wp-content/uploads/deliverables/METIS_D1.4_v1.0.pdf
>
>Simulation model source:
>https://www.metis2020.com/documents/simulations/
>
>* NYU wireless
>Home page:
>http://wireless.engineering.nyu.edu/mmwave-channel-modeling/
>
>Simulation model source:
>http://wireless.engineering.nyu.edu/nyusim/
>
>- IEEE
>Report:
>http://www.5gworkshops.com/5G_Channel_Model_for_bands_up_to100_GHz(2015-12-6).pdf
>

Nice resources there.    Since 5G covers a huge range of spectrum with
large variety of signal bandwidths (up to wiiiiide) as well as a large
number of applications and channel scenarios, it's a complicated
beast.

>On Sun, 6 Nov 2016 05:29:37 -0800 (PST), lito844@gmail.com wrote:
>
>>On Friday, November 4, 2016 at 1:13:14 PM UTC-4, runinrainy wrote:
>>> Hello,
>>> 
>>> As far as I know the channel standards and physical channel models
have
>>> not been determined yet for 5G applications. The works in different
>>> regions are being made in order to simulate and define the effective
>>> channel models in 5G environment. 
>>> Does anyone know the most candidate for channel modeling? It will
most
>>> probably be a time-varying channel but is possible that different
>channel
>>> parameters are being worked on by the research centers.
>>> 
>>> What is the mathematical model being used for the current 5G studies
and
>>> tests?
>>> 
>>> Thanks in advance! 
>>> ---------------------------------------
>>> Posted through http://www.DSPRelated.com
>>
>>3GPP, the 5G standards organization, recently approved a study of
channels
>suitable for 5G.  The report, released as TR 38.900 is available from
their
>ftp archive:
>>
>>http://www.3gpp.org/ftp/specs/archive/38_series/38.900/
>>
>>The study should give you a good idea of the current modeling efforts
>undertaken by industry and academia as well as the direction of 3GPP for
5G
>systems.
>>
>>Key takeaways that distinguish the 5G channel from its predecessors
are:
>>- Higher carrier frequencies, millimeter wave up to 100 GHz
>>- Massive MIMO with beamforming
>>- Wider bandwidths, up to 2 GHz
>>- New deployment scenarios, device to device (D2D), vehicle to vehicle
>(V2V)
>>- Smaller cells
>>
>>Some of the key research contributing to the study findings are:
>>* METIS
>>Report:
>>https://www.metis2020.com/wp-content/uploads/deliverables/METIS_D1.4_v1.0.pdf
>>
>>Simulation model source:
>>https://www.metis2020.com/documents/simulations/
>>
>>* NYU wireless
>>Home page:
>>http://wireless.engineering.nyu.edu/mmwave-channel-modeling/
>>
>>Simulation model source:
>>http://wireless.engineering.nyu.edu/nyusim/
>>
>>- IEEE
>>Report:
>>http://www.5gworkshops.com/5G_Channel_Model_for_bands_up_to100_GHz(2015-12-6).pdf
>>
>
>Nice resources there.    Since 5G covers a huge range of spectrum with
>large variety of signal bandwidths (up to wiiiiide) as well as a large
>number of applications and channel scenarios, it's a complicated
>beast.

Thanks everyone providing the answers here. I have gone through the latest
works on channel modeling and it seems the model presented by METIS is the
most popular one, and as far as i know they have been awarded for this
project. The model presented by METIS includes angle of arrivals and angle
of departures for TX and RX antennas respectively. 

-Does anyone know or able to visualize how to obtain these angle
parameters in channel impulse response function? I have read lots of
papers but so far they show only the mathematical description of these
parameters.

-What is the logic behind adding these angle parameters in the channel
response h function? By adding the angle parameters we mean the additional
attenuation is also considered in the amplitude of each path of the
arrived signal?

-In terms of time-varying multipath channel; looking at the channel
response function, how can we obtain the parameters like doppler shift and
phase delay parameters to construct the channel impulse response at the
receiver so that it can be used by the receiver during deconvolution
process?

Thanks again...
---------------------------------------
Posted through http://www.DSPRelated.com

On Thu, 22 Dec 2016 03:56:27 -0600, "runinrainy" <100271@DSPRelated>
wrote:

>>On Sun, 6 Nov 2016 05:29:37 -0800 (PST), lito844@gmail.com wrote:
>>
>>>On Friday, November 4, 2016 at 1:13:14 PM UTC-4, runinrainy wrote:
>>>> Hello,
>>>> 
>>>> As far as I know the channel standards and physical channel models
>have
>>>> not been determined yet for 5G applications. The works in different
>>>> regions are being made in order to simulate and define the effective
>>>> channel models in 5G environment. 
>>>> Does anyone know the most candidate for channel modeling? It will
>most
>>>> probably be a time-varying channel but is possible that different
>>channel
>>>> parameters are being worked on by the research centers.
>>>> 
>>>> What is the mathematical model being used for the current 5G studies
>and
>>>> tests?
>>>> 
>>>> Thanks in advance! 
>>>> ---------------------------------------
>>>> Posted through http://www.DSPRelated.com
>>>
>>>3GPP, the 5G standards organization, recently approved a study of
>channels
>>suitable for 5G.  The report, released as TR 38.900 is available from
>their
>>ftp archive:
>>>
>>>http://www.3gpp.org/ftp/specs/archive/38_series/38.900/
>>>
>>>The study should give you a good idea of the current modeling efforts
>>undertaken by industry and academia as well as the direction of 3GPP for
>5G
>>systems.
>>>
>>>Key takeaways that distinguish the 5G channel from its predecessors
>are:
>>>- Higher carrier frequencies, millimeter wave up to 100 GHz
>>>- Massive MIMO with beamforming
>>>- Wider bandwidths, up to 2 GHz
>>>- New deployment scenarios, device to device (D2D), vehicle to vehicle
>>(V2V)
>>>- Smaller cells
>>>
>>>Some of the key research contributing to the study findings are:
>>>* METIS
>>>Report:
>>>https://www.metis2020.com/wp-content/uploads/deliverables/METIS_D1.4_v1.0.pdf
>>>
>>>Simulation model source:
>>>https://www.metis2020.com/documents/simulations/
>>>
>>>* NYU wireless
>>>Home page:
>>>http://wireless.engineering.nyu.edu/mmwave-channel-modeling/
>>>
>>>Simulation model source:
>>>http://wireless.engineering.nyu.edu/nyusim/
>>>
>>>- IEEE
>>>Report:
>>>http://www.5gworkshops.com/5G_Channel_Model_for_bands_up_to100_GHz(2015-12-6).pdf
>>>
>>
>>Nice resources there.    Since 5G covers a huge range of spectrum with
>>large variety of signal bandwidths (up to wiiiiide) as well as a large
>>number of applications and channel scenarios, it's a complicated
>>beast.
>
>Thanks everyone providing the answers here. I have gone through the latest
>works on channel modeling and it seems the model presented by METIS is the
>most popular one, and as far as i know they have been awarded for this
>project. The model presented by METIS includes angle of arrivals and angle
>of departures for TX and RX antennas respectively. 
>
>-Does anyone know or able to visualize how to obtain these angle
>parameters in channel impulse response function? I have read lots of
>papers but so far they show only the mathematical description of these
>parameters.

It sounds like you're assuming a MIMO system, and it will be important
that you are clear on what you're asking or you won't get answers
relevant to what you want to know.   A "channel impulse reponse" often
means the IPR (impulse response) or channel delay spread between two
individual antennas.   In a MIMO system, there is a single IPR between
each Tx and Rx antenna pair.   Combinations of these individual IPRs
into a matrix provides the channel matrix.

An individual IPR provides no information on direction of arrival of
the signal.   The channel matrix, the array of individual IPRs, can be
used to beamform to a particular channel tap if the geometry of the
receiving antennas is known.   This is a complex topic that can't
adequately be addressed in a usenet forum post, but beamforming is the
sort of thing you want to research.

>-What is the logic behind adding these angle parameters in the channel
>response h function? By adding the angle parameters we mean the additional
>attenuation is also considered in the amplitude of each path of the
>arrived signal?

I'm not sure what you're asking, but beamforming information can be
important to increase channel gain and/or reject interferers.   These
days it is also used for Multiple Access to isolate individual
transmitters.   Much of that requires information other than the
channel matrix, which primarily provides information about the channel
behavior. 

>-In terms of time-varying multipath channel; looking at the channel
>response function, how can we obtain the parameters like doppler shift and
>phase delay parameters to construct the channel impulse response at the
>receiver so that it can be used by the receiver during deconvolution
>process?

Again, you need to provide more context.   A deconvolution process
implies that you may be wanting to apply time-domain single-carrier
techniques, but much of what you are describing seems to imply that
you are asking questions relevant to a frequency-domain multi-carrier
system.  You haven't indicated any details about the context of your
system, so it's difficult to know what you're asking.