Physical Layer Enhancement for LTE-Advanced
Mohamed Gamal Mohamed El-Barbary;
Abstract
In a world where technology is moving forward rapidly, the information exchange needs massive yet reliable links for all users in order to enable the benefits of that technology.
The mobility itself is an undisputed property of telecommunication evolution, which overloads the air interface resources and severely affects user’s experience from reliability of connection as well as the link speed point of views.
In this thesis we provide a new multiplexing technique, that is derived from OFDM, which is the multiplexing technique used in LTE-A, as a step towards next generation of mobile communication.
The strength of the provided technique lies in the back compatibility with OFDM systems, so as old devices can still obtain service rather than being obsolete.
It is also implemented on practical model of OFDM transceiver using modified IDFT/DFT blocks to set up robust yet easy to implement transceiver.
The system is based on software implementation on programmable chips, which provides agility to change how subcarriers are oriented in order to provide the optimum capacity for each user depending on channel status fed back by users’ devices.
Furthermore, the system has and extended application that also manipulates the frequency orientation of carriers to cope with fast variation of channels and hence sets a new threshold for users’ mobility.
The results of system performance show additional bandwidth gain for the same energy per bit for a certain limit, with better peak to average power ratio and processing load of the same conventional system.
These merits set provided system to be a suitable candidate for next generation of mobile telecommunication system.
The mobility itself is an undisputed property of telecommunication evolution, which overloads the air interface resources and severely affects user’s experience from reliability of connection as well as the link speed point of views.
In this thesis we provide a new multiplexing technique, that is derived from OFDM, which is the multiplexing technique used in LTE-A, as a step towards next generation of mobile communication.
The strength of the provided technique lies in the back compatibility with OFDM systems, so as old devices can still obtain service rather than being obsolete.
It is also implemented on practical model of OFDM transceiver using modified IDFT/DFT blocks to set up robust yet easy to implement transceiver.
The system is based on software implementation on programmable chips, which provides agility to change how subcarriers are oriented in order to provide the optimum capacity for each user depending on channel status fed back by users’ devices.
Furthermore, the system has and extended application that also manipulates the frequency orientation of carriers to cope with fast variation of channels and hence sets a new threshold for users’ mobility.
The results of system performance show additional bandwidth gain for the same energy per bit for a certain limit, with better peak to average power ratio and processing load of the same conventional system.
These merits set provided system to be a suitable candidate for next generation of mobile telecommunication system.
Other data
| Title | Physical Layer Enhancement for LTE-Advanced | Other Titles | تعزيز استخدام الطبقة الفيزيقية لنظام الاتصال ذو التطور طويل المدى المتقدم | Authors | Mohamed Gamal Mohamed El-Barbary | Issue Date | 2017 |
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