Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Full-Duplex Multi-Antenna Base-Stations with Reduced Complexity
The future generations of cellular systems promise the user a wide range of services and applications that require revolutionary enhancements in the network performance, in terms of throughput, capacity, latency, and reliability. Therefore, in order to fulfill the requirements, the current wireless systems need new technologies as revolutionary as the promised applications. Antenna arrays, especially massive Multi-Input Multi-Output (MIMO), Millimeter Waves (mmWaves), Nonorthogonal Multiple Access (NOMA), and In-Band Full-Duplex (IBFD) transmission, have been the most rising approaches for investigation. IBFD, or shortly known as Full-duplex (FD), is a promising technology that allows the device to simultaneously transmit and receive on the same frequency. Hence, the transceiver does not need any duplex scheme, neither in frequency nor in time domains, as it does in half-duplex (HD) transmission. Besides the potential to double the spectral efficiency, FD has many significant advantages. First, it can distinctly reduce the latency in wireless networks, which is a critical issue in 5G. Furthermore, it simplifies spectrum management and allows easier dynamic spectrum allocation, especially in cognitive radio (CR) systems. Also, it enables cellular systems to reuse frequency bands for radio access and backhauling. Moreover, FD is a potential solution for other wireless problems such as hidden terminals, congestion, and collision. However, the fact that the self-interference (SI) signal is usually 80-120 dB stronger than the weak desired signal makes SI cancellation (SIC) the main challenge against the realization of FD. A hybrid SIC solution should be deployed, in propagation, analog, and digital domains, to accumulatively suppress the SI to the noise floor. Most of SIC methods are based on copying the transmitted signal, then subtracting it from the total received signal in order to eliminate SI. However, this methodology suffers from the sensitivity to the imperfections of analog components, i.e., the hardware ...
Full-Duplex Multi-Antenna Base-Stations with Reduced Complexity
The future generations of cellular systems promise the user a wide range of services and applications that require revolutionary enhancements in the network performance, in terms of throughput, capacity, latency, and reliability. Therefore, in order to fulfill the requirements, the current wireless systems need new technologies as revolutionary as the promised applications. Antenna arrays, especially massive Multi-Input Multi-Output (MIMO), Millimeter Waves (mmWaves), Nonorthogonal Multiple Access (NOMA), and In-Band Full-Duplex (IBFD) transmission, have been the most rising approaches for investigation. IBFD, or shortly known as Full-duplex (FD), is a promising technology that allows the device to simultaneously transmit and receive on the same frequency. Hence, the transceiver does not need any duplex scheme, neither in frequency nor in time domains, as it does in half-duplex (HD) transmission. Besides the potential to double the spectral efficiency, FD has many significant advantages. First, it can distinctly reduce the latency in wireless networks, which is a critical issue in 5G. Furthermore, it simplifies spectrum management and allows easier dynamic spectrum allocation, especially in cognitive radio (CR) systems. Also, it enables cellular systems to reuse frequency bands for radio access and backhauling. Moreover, FD is a potential solution for other wireless problems such as hidden terminals, congestion, and collision. However, the fact that the self-interference (SI) signal is usually 80-120 dB stronger than the weak desired signal makes SI cancellation (SIC) the main challenge against the realization of FD. A hybrid SIC solution should be deployed, in propagation, analog, and digital domains, to accumulatively suppress the SI to the noise floor. Most of SIC methods are based on copying the transmitted signal, then subtracting it from the total received signal in order to eliminate SI. However, this methodology suffers from the sensitivity to the imperfections of analog components, i.e., the hardware ...
Full-Duplex Multi-Antenna Base-Stations with Reduced Complexity
Zarifeh, Nidal (Autor:in) / Kaiser, Thomas
01.04.2020
Hochschulschrift
Elektronische Ressource
Englisch
Developing Specifications for Cellular-Telephone Base Stations
| British Library Online Contents | 1994