MULTIPLE UWB EMITTERS DOA ESTIMATION EMPLOYING TIME HOPPING SPREAD SPECTRUM
نویسندگان
چکیده
منابع مشابه
Spectral Density of Random Time -Hopping Spread-Spectrum UWB Signals with Uniform Timing Jitter
We derive the power spectral density of timehopping (TH) spread-spectrum signals in the presence of random timing jitter, which is characterized typically by a discrete-time stationary process (independent of the TH sequences). Detailed descriptions of different TH schemes, employing a random TH sequence, is given and spectral analysis of such TH signals in the presence of uniform timing jitter...
متن کاملMultiple access for UWB impulse radio with pseudochaotic time hopping
Pseudochaotic time hopping (PCTH) is a recently proposed encoding/modulation scheme for ultra-wideband (UWB) impulse radio. PCTH exploits concepts from symbolic dynamics to generate aperiodic spreading sequences, resulting in a noise-like spectrum. In this paper, we present a multiple-access technique suitable for the PCTH scheme. In particular, we provide an analytical expression of the bit-er...
متن کاملFrequency and Time Hopping PPM UWB Multiple Access Communication Scheme
In this paper we propose frequency and time hopping pulse position modulation (FTH-PPM) ultra wideband (UWB) for multiple access communications. We have derived and investigated the bit error probability for the multi-user synchronous transmitter case in multipath channels with Additive White Gaussian Noise (AWGN). Simulation results show that bit error probability performance of FTH-PPM UWB ou...
متن کاملPerformance analysis of time-hopping spread-spectrum multiple-access systems: uncoded and coded schemes
In [Scholtz (1993)], an ultra-wide bandwidth time-hopping spread-spectrum code division multiple-access system employing a binary PPM signaling has been introduced, and its performance was obtained based on a Gaussian distribution assumption for the multiple-access interference. In this paper, we begin first by proposing to use a practical low-rate error correcting code in the system without an...
متن کاملUltra-wide bandwidth time-hopping spread-spectrum impulse radio for wireless multiple-access communications
Attractive features of time-hopping spread-spectrum multiple-access systems employing impulse signal technology are outlined, and emerging design issues are described. Performance of such communications systems in terms of achievable transmission rate and multiple-access capability are estimated for both analog and digital data modulation formats under ideal multiple-access channel conditions.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Progress In Electromagnetics Research
سال: 2008
ISSN: 1559-8985
DOI: 10.2528/pier07091303