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Pedestrian dead reckoning (PDR) systems which based on inertial sensors to capture user's movement, and wireless positioning systems which adopt wireless local area network (WLAN) for indoor pedestrian localization have been widely studied in recent years. Inertial navigation system is self-contained and reliable in a short period of time with errors accumulated over time. Wireless positioning has...
High precision gyroscopes are often used to find the north direction or determine the orientation by detecting the horizontal component of the earth's rotation rate in the field of north-seeking, oil drilling and mining. The ability to measure the earth's rotation rate accurately for gyroscopes can be applied as a basic criterion in those areas. MEMS gyroscopes were thought unable to measure the earth's...
This paper proposes a hybrid scheme of the Alamouti coding and vertical bell labs layered space-time (V-BLAST) with the zero-forcing (ZF) receiver, which can achieve the unequal error protection (UEP) transmission in terms of the differences of importance in the layered sources. We analyze the tradeoff between spatial diversity and multiplexing in a mathematical manner, and prove the monotonic behavior...
This paper proposes a blind multi-user detection algorithm under the fading channels in the existence of impulse noise based on signal sub-space estimation. Usually the traditional filtering algorithms adapt training data sequences and need more knowledge about the spreading waveform, which may delay the desired user. This algorithm adapts RLS filter that can estimate the coefficients only using the...
This paper proposes a improved GSC (generalized sidelobe canceller) receiver structures based on a new group constraint, which is suitable to eliminate multiple-access interference (MAI), inter-symbol interference (ISI) in direct-sequence code-division multiple access (DS/CDMA) downlink multi-user system. A new group constraint that is used to construct the group-blind adaptive multi-user detector...
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