作者: 不適當 時間: 2025-3-21 21:52 作者: DEAF 時間: 2025-3-22 03:21
Modulation-Aware Error Coding,ronments for transporting information..In the urge to get data as quick and as reliable as possible from one place to another, the efficiency of available resources is often pushed as far as possible towards the theoretical limit predicted by the Shannon theorem [Sha48]. Unfortunately, Shannon does 作者: 舔食 時間: 2025-3-22 05:50
Modulation-Aware Decoding: Signal Reconstruction,fer characteristics of the channel. For this reason, this type of channel coding techniques have been classified under the name . systems. All these techniques have a common flaw, though: the characteristics of the channel are known to the receiver, but not at transmission side. A lot of the effort 作者: LAPSE 時間: 2025-3-22 11:25 作者: outer-ear 時間: 2025-3-22 13:56
Reference Design of a Pulse-Based Receive Unit, chain. The dual in-phase/ quadrature (.) signal path of the receiver allows for coherent demodulation of phase modulated pulse-based radio signals. The design is optimized to cope with the large bandwidths at the .-input stage and the baseband output buffers are able to directly drive an external a作者: 遺產(chǎn) 時間: 2025-3-22 18:42
Nonlinear Loaded Open-Loop Amplifiers,stortion suppression, the reader is referred to Appendix 7. In contrast to the feedback-oriented approach, the open-loop amplifier that is described below, relies on a completely different distortion suppression mechanism. The linearized open-loop amplifier can be split in two sections. The first se作者: BALK 時間: 2025-3-22 22:48
Book 2009 quality. Consequently, it is more bene?cial to think in terms of channel bandwidth than it is to pursue a high transmission power. All the above elements are embodied in the concept of spatial ef?ciency. By describing the throughput of a system 2 in terms of bits/s/Hz/m , spatial ef?ciency takes in作者: 形容詞詞尾 時間: 2025-3-23 01:59 作者: Enzyme 時間: 2025-3-23 07:51
pectively. The precomputation time is .(.) and the required number of known keystream sequences generated from different public keys is about ./102. For example, one can choose . ≈ 2. and . ≈ 2.. To obtain the secret session key from the determined internal state, a so-called internal state reversio作者: 致命 時間: 2025-3-23 10:28 作者: ILEUM 時間: 2025-3-23 17:38 作者: 騷動 時間: 2025-3-23 19:24
Pulse-Based Wideband Radio,and are at the same time the ‘enablers’ for new technologies with odd names such as there is the . (cable-free .) and the even more remarkable ... However, things are not always as they seem to be and have to be put in perspective.作者: 厭煩 時間: 2025-3-23 22:49 作者: crumble 時間: 2025-3-24 02:28
ses..We also prove the first non-trivial lower bound for the number of random bits needed to implement such a reduction whenever the receiver sends no messages to the sender. This bound is also tight in many significant cases.作者: 性冷淡 時間: 2025-3-24 06:37
robability converges to zero if and only if the noise probability is less than a critical value expressed in terms of the numbers of parity-checks. An alternative approach to the critical noise estimation based on the residual error-rate after each iterative revision is also discussed.作者: intelligible 時間: 2025-3-24 14:15
pply this to construct computational schemes for general access structures. The size of shares each participant must have in our schemes is nearly minimal: it is equal to the minimal bound plus a piece of information whose length does not depend on the secret size but just on the security parameter.作者: 思想 時間: 2025-3-24 15:13 作者: 親密 時間: 2025-3-24 20:32 作者: 鞭打 時間: 2025-3-25 01:05 作者: Myocyte 時間: 2025-3-25 05:33
Modulation-Aware Decoding: Signal Reconstruction,nel. Most wideband transmission mediums suffer from frequency-selectivity caused by reflections or multipath propagation. In addition, wideband wireless channels are increasingly vulnerable to imperfections such as time-varying channel-selective fading and in-band interference. In the previous secti作者: ROOF 時間: 2025-3-25 09:01
Benefits of ISI in the Indoor Environment,cific categories under which a multipath environment can be classified. Along with this, it is indicated how this is anticipated for in some of the wireless systems (e.g. 802.11a/b/g) that have been discussed earlier in this book. Towards the end of this section, it should become clear to the reader作者: curettage 時間: 2025-3-25 14:20
Pulse-Based Wideband Radio,.6 GHz frequency band (Figure 5.1). Of course, this has generated a lot of interest from both industry and academics, since the enormous amount of bandwidth provides a lot of perspectives and new opportunities for broadband data communication applications, or the so-called . (.) systems. From a mark作者: Increment 時間: 2025-3-25 19:50 作者: 浪費時間 時間: 2025-3-25 20:40
Nonlinear Loaded Open-Loop Amplifiers,lsebased receiver of Section 7.6, serving as variable gain amplifier (.) in the baseband section, but a stand-alone chip version has also been implemented to allow for more extensive characterization. Although the linearized amplifier was specifically intended for use in the signal chain of a wideba作者: 六個才偏離 時間: 2025-3-26 03:24 作者: 多余 時間: 2025-3-26 07:48
978-90-481-8503-0Springer Science+Business Media B.V. 2009作者: 啜泣 時間: 2025-3-26 12:33 作者: Blanch 時間: 2025-3-26 16:40
In the paper, a public-key cryptosystem that is, as a matter of fact, a modification of the Merkle-Hellman system has been described. However, unlike the Merkle-Hellman system, it has been built using a polynomial ring. Finally, its quality has been given.作者: orthopedist 時間: 2025-3-26 19:58 作者: 共同確定為確 時間: 2025-3-26 22:50
https://doi.org/10.1007/978-90-481-2450-3Analog Circuits; Data Converters; Digital Signal Processing DSP; Pulse Based Radio; Signal reconstructio作者: engagement 時間: 2025-3-27 02:47
Wim Vereecken,Michiel SteyaertAnalyses the problems of wideband wireless communications, such as in-band interference, multipath reflections.Introduces a novel interference suppression and signal reconstruction scheme for Ultra-Wi作者: motivate 時間: 2025-3-27 05:25
several shortcomings. In order for the subliminal receiver to be able to recover the subliminal message, it was necessary Tor him to know the transmitter’s secret key. This meant that the subliminal receiver had the capability to utter undetectable forgeries of the transmitter’s signature. Also, on作者: arcane 時間: 2025-3-27 11:04
ret. If any non qualified subset has absolutely no informa- tion about the secret, then the scheme is called perfect. Unfortunately, in this case the size of the shares cannot be less than the size of the secret. Krawczyk [.] showed how to improve this bound in the case of compu- tational threshold 作者: 無政府主義者 時間: 2025-3-27 15:34 作者: Asseverate 時間: 2025-3-27 21:23
ed. It is allegedly used in the GSM standard for digital cellular mobile telephones. Very short keystream sequences are generated from different initial states obtained by combining a 64-bit secret session key and a known 22-bit public key. A basic divide-and-conquer attack recovering the unknown in作者: Cervical-Spine 時間: 2025-3-27 23:53 作者: 柔軟 時間: 2025-3-28 05:53 作者: Anticoagulant 時間: 2025-3-28 09:08
sian iterative error-correction procedure and different weight parity-checks, is analyzed. It is proved that the self-composition of the Bayes error probability converges to zero if and only if the noise probability is less than a critical value expressed in terms of the numbers of parity-checks. An作者: declamation 時間: 2025-3-28 10:54
