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Recent years have witnessed an ever-increasing interest in smart antenna technologies to boost the capacity of existing and future wireless systems. As one of the first standards the wireless metropolitan area network IEEE 802.16 (WiMAX) provides means to support these techniques. This paper investigates the potential of smart antenna beamforming and space(More)
The huge growth in wireless communication has led to a wide range of technologies each addressing a particular scenario or need. The goal of the WINNER project is to develop a single new ubiquitous radio access system concept to address the whole spectrum of mobile communications scenarios. This paper surveys the challenge of providing ubiquitous operation(More)
per REC in a wide-area setup. 3 RNs (red, green, yellow squares) per BS (blue triangle) Abstract—This work presents a low-cost, low complexity deployment concept for a relay-based cellular broadband network. The concept is based on a combination of a multiantenna OFDMA Base Station (BS) and simple, single-antenna OFDMA Relay Nodes (RN) and User Terminals(More)
Multi-mode capable wireless networks are a key issue in future wireless communication. This paper introduces therefore the realization and application of a generic protocol stack as common part of a multi-mode capable communication protocol software. This can be regarded as an extension of the field of software defined radios with its origin in the physical(More)
This paper focuses on the realization and application of a generic protocol stack for reconfigurable wireless communication systems. This focus extends the field of software-defined radios which usually concentrates on the physical layer. The generic protocol stack comprises common protocol functionality and behavior which are extended through specific(More)
The paper shows that relays as inherent technology of IMT-Advanced system can provide low delays as required for future multi-media services. The results shown prove that the proposed relaying scheme is able to keep relay requirements on the air interface and to support delay sensitive high interactive services. The analytical results are validated by(More)