Wireless communication has become an important part of our daily lives. In the past decades, the phenomenal increasing demand for mobile wireless data services has been pushing both industry and academia to move to millimeter wave (mmWave) frequencies (30-300GHz) for the next generation (5G) mobile communication. The main motivation for mmWave communication is the unprecedented massive bandwidth (multi-GHz) which can offer multi-Gbps data rates for each mobile devices. However, mmWave signals experience high path loss, directivity and blockages, which severely limits the network performance. The goal of this thesis is to clearly incorporate all the new features at mmWave frequencies, on top of which to provide new state of the art schemes regarding different communication phases. Specifically, this thesis contains four main contributions. First, we propose an efficient beam alignment (BA) scheme for mmWave OFDM (orthogonal frequency division multiplexing) systems. Second, we further explore single-carrier (SC) operation mode at mmWave frequencies and propose a new BA scheme for mmWave SC systems. Third, we define two HDA antenna architectures which can be regarded as two ``extreme'' cases, i.e., the fully-connected (FC) architecture and the one-stream-per-subarray (OSPS) architecture. We propose a joint performance evaluation of the initial BA, the consequent data communication as well as the hardware impairments. Fourth, we extend our work to relay networking to further increase the communication range at mmWave frequencies.
Millimeter wave wireless communication: initial acquisition, data communication and relay network investigation
Drahtlose Millimeterwellenkommunikation: Ersterfassung, Datenkommunikation und Untersuchung von Relay-Netzwerken
2020
Miscellaneous
Electronic Resource
English
DDC: | 629 |
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