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— In this paper, we apply two different types of space-time block codes (STBC) in the downlink of a broadband mobile radio air interface based on MC-CDMA, which is a promising candidate for a 4 th generation mobile radio system. The first type are " STBCs from orthogonal designs ". For 2 TX-antennas, this is the well-known " Alamouti "-scheme. These STBCs(More)
Fifth-generation (5G) networks will be the first generation to benefit from location information that is sufficiently precise to be leveraged in wireless network design and optimization. We argue that location information can aid in addressing several of the key challenges in 5G, complementary to existing and planned technological developments. These(More)
—In this paper we present the results of real-life localization experiments performed in an unprecedented cooperative and heterogeneous wireless context. These measurements are based on ZigBee and orthogonal frequency division mul-tiplexing (OFDM) devices, respectively endowed with received signal strength indicator (RSSI) and round trip delay (RTD)(More)
—Swarm navigation systems are emerging technique to investigate unknown environment. Organizing the access of shared radio channel is one of the main challenges due to the massive number of anarchical agents and the crucial mission requirements, e.g. update-rate and position accuracy. In this paper, we design a radio-based swarm navigation system and(More)
—Cooperative positioning (CP) can be used either to calibrate the accumulated error from inertial navigation or as a stand-alone navigation system. Though intensive research has been conducted on CP, there is a need to further investigate the joint impact from the system level on the accuracy. We derive a posterior Cramér-Rao bound (PCRB) considering both(More)
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In this paper we address the benefit of observing a signal of opportunity for mobile terminal positioning. In an exemplary environment we arrange three mobile terminals in an equilateral triangle. These mobile terminals determine their position relatively to each other by transmitting and receiving mobile radio signals. In addition they observe a signal of(More)