I broadly need the idea of differences in the architectures of 4g n 5g with respect to the physical layer.
Well till now the architecture of 5G is not standardized. 5G could be a totally a new thing at the radio resource access layer or it could be again evolution from LTE advanced 4G. Moreover it may contain some new technologies like massive mimo, Internet of things, advanced self organization and healing networks, use of new waveforms other than OFDM like FBMC, UFMC and Non orthogonal multiple access schemes.
Well till now the architecture of 5G is not standardized. 5G could be a totally a new thing at the radio resource access layer or it could be again evolution from LTE advanced 4G. Moreover it may contain some new technologies like massive mimo, Internet of things, advanced self organization and healing networks, use of new waveforms other than OFDM like FBMC, UFMC and Non orthogonal multiple access schemes.
thank you very much for the reply sir. actually i m thinking to do my ME (EnTC ) Project on the topic massive mimo in simulink platform . so accordingly what could be the parameters i can evaluate ??
They are totally different in terms of architecture,
5G will not be a cellular network any more, it is about connecting the entire society in one network. This will include integrating Cellular, Intelligent Transportation Systems, Internet of Things, WLAN, and low-power wireless technologies ( for Medical Applications and so on) in one network.
Dense deployment is needed with 1000x of traffic as well as intensive interworking between different technology. It might require defining new protocols as well.
Regarding the enabling technologies, Massive MIMO, mmWave are one of them.
I suggest you to look at the new waveforms in this paper "Waveform contenders for 5G - OFDM vs. FBMC vs. UFMC" . The author suggest that FBMC is better suited than OFDM in theory however, practical considerations pinpoint many issues of FBMC. UFMC is promising which is collecting the advantages FBMC while avoiding its drawbacks.
thanks a lot sir ... i will do literature survey as per the inputs from you.
You are welcome.
If you are interested in investigating PHY (waveforms), this paper is good as well.
"5G Air Interface Design based on Universal Filtered (UF-)OFDM"
Dear Aamir Habib,
Do you have any references for the Advanced self-organizaion in 5G networks
but sir ,is Massive MIMO Concept practically implemented till now in true sense?
Can you give me some ideas to implement Massive MIMO in Matlab simulink platform for ME Project ?? i will be grateful
If you have not work with MIMO, I suggest you go for it first.
You can find a book " MIMO-OFDM wireless communication with MATLAB". it has all the codes inside.
You can build on it.
can anyone explain the meaning of piolt contamination in simplest layman's language ... really not getting its concept.
And how conventional MIMO can can be implemented on FPGA ? I mean which parameters can be evaluated on FPGA for MIMO simulated on Simulink platform ?
Pilot contamination is the issue related to sharing of pilots between small cells in multiuser systems with large MIMOS used. Sharing pilots will results in interference causing less reliable channel estimation (assuming no coordination between the neighboring cells exists so as to share the pilots say at different times thereby avoiding pilots contamination). Thanks. @AlDmour.
Thanks a lot for the reply sir .And sir does the meaning of 'pilot' is same as that we use in OFDM ? i mean in MIMO system in which block we can adjust the pilots ?
Yes, of course. Pilots are and can be any of the OFDM carriers but they are used for CSI (channel state information). There are number of pilots in each resource block in OFDM. You need to review OFDM resources block structure - in any book on OFDM- which include data carriers and pilot carriers. There also dc carrier (reference carrier on which no data is sent) and some left as guard bands. Thanks. @AlDmour.
can anyone please suggest me seminar topic related to the keywords mimo-ofdm systems with stbc and beamforming for my ME Project competeion..
i will be grateful with the sugesstions alongwith any paper link
is there anyone who can help me to perform tap variations with different delays and path gains for rayleigh channel in simulink...i m not getting proper BER Plot
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