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Equalization and space diversity techniques in mobile environments: under certain conditions, diversity techniques perform better than equalization techniques in typical mobile radio environments
Valdominos Bardají, Antonio; Casadevall Palacio, Fernando José
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils
The development of high-quality digital mobile radio systems has become a major goal in the field of digital communications. The possibility of providing speech and data services free of wire constrictions in different environments is a very attractive proposition, supported by means of the personal communications network (PCN) concept. The aim of the present article is to analyze the behavior of different receiver structures for such systems in order to obtain some clues to be used in designing the next generation of mobile systems. These systems have to provide both low- and high-data-rate services (up to 1 Mb/s) and be efficient in environments where a high density of traffic is generated. Moreover, as the carrier frequencies will range between 1 and 4 GHz, and the vehicle speed can be as high as 400 km/hr (e.g., high-speed trains), large Doppler frequency values must be coped with. Under certain conditions, diversity techniques perform better than equalization techniques in typical mobile radio environments.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Comunicacions mòbils
Mobile communication systems
Amplitude modulation
Carrier frequencies
Data communications
Data services
Digital communications
Digital radio systems
Diversity reception
Doppler frequency
Equalisers
Equalization techniques
High-data-rate services
High-speed trains
High-quality digital mobile radio systems
Low-data-rate services
Personal communications networks
Receiver structures
Space diversity techniques
Speech services
Telecommunications channels
Vehicle speed
PCN
SHF
UHF
1 to 4 GHz
Sistemes de comunicacions mòbils
Artículo
IEEE.
         

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