Wireless communication systems 188 Dissertations 158 Dissertations, Academic 148 Mobile communication systems 129 English language 106 Communication 98 Study and teaching 77 Oral communication 69 Optical communications 68 Language 49 Social aspects 47 Design and construction 43 Study and teaching (Higher) 34 Communication in management 33 Fiber optics 33 Mobile communication systems in education 33 Communication systems 32 Intercultural communication 32 Communication in education 31 Computer networks 29 Communication in organizations 28 Digital communications 27 Interpersonal communication 27 Broadband communication systems 26 Business communication 26 Foreign speakers 26 Technological innovations 26 Discourse analysis 25 Means of communication 25 Conversation analysis 24