Non-data aided timing acquisition of ultra-wideband transmissions using cyclostationarity
نویسندگان
چکیده
Low-complexity rapid timing acquisition constitutes a major challenge in realizing the high potential that ultra-wideband (UWB) wireless technology promises for indoor communications. We derive and test two such timing acquisition algorithms which capitalize on the cyclostationarity that is naturally present in UWB transmissions. Our novel schemes are blind, they do not require multiple antennas or oversampling, and rely on frame-rate sampling which reduces complexity and acquisition delay, considerably.
منابع مشابه
Timing Acquisition with Noisy Template for Ultra-Wideband Communications in Dense Multipath
Timing acquisition is critical to enabling the potential of ultra-wideband (UWB) radios in high-speed, short-range indoor wireless networking. An effective timing acquisition method should not only operate at a low sampling rate to reduce implementation complexity and synchronization time, but also be able to collect sufficient signal energy in order to operate in a reasonable transmit SNR regi...
متن کاملNovel Fine Synchronization Using TDT for Ultra Wideband Impulse Radios
Ultra-Wideband (UWB) technology for indoor wireless communications has received increasing consideration recently for his potential of high data rates with low-complexity transceivers. Timing synchronization represents a foremost challenge in realizing this potential. In this paper, a novel fine synchronization method has been established. By applying this method, we develop and test timing alg...
متن کاملAcquisition probability of multi-user UWB systems in the presence of a novel synchronization approach
In this paper, to synchronize Ultra Wideband (UWB) systems in ad-hoc multi-user environments, we propose a new timing acquisition approach for achieving a good performance despite the difficulties to get there. Synchronization constraints are caused by the ultra-short emitted waveforms nature of UWB signals. Used in [1, 2] for single-user environments, our timing acquisition approach is based o...
متن کاملLow-complexity Data-aided Timing Acquisition for Time Hopping Uwb Impulse Radios
Timing acquisition is critical to enabling the potential of ultra-wideband impulse radios in high-speed, short-range indoor wireless networking. To this end, optimum data-aided timing offset estimators are derived in this paper based on the maximum likelihood (ML) criterion. A generalized likelihood ratio test (GLRT) is employed to detect an ultra-wideband waveform propagating through dense mul...
متن کاملLow Sampling Rate Time Acquisition Schemes and Channel Estimation Algorithms of Ultra-Wideband Signals
Ultra-wideband (UWB) communication is a viable technology to provide high data rates over broadband wireless channels for applications, including wireless multimedia, wireless Internet access, and future-generation mobile communication systems (Karaoguz, 2001; Stoica et al., 2005). Two of the most critical challenges in the implementation of UWB systems are the timing acquisition and channel es...
متن کامل