signal conditioning for if sampling

... situations as different users are likely to have slightly different time delays However, there are few signal detection algorithms, if any, proposed for quasi-synchronous MIMO systems due to the difficulties ... receiver Signal detection is therefore an important component in these systems Most of the works done on signal detection for MIMO systems consider synchronous case It means that all signals transmitted ... system where different users are likely to have slightly different time delays However, there are few algorithms, if any, proposed for quasisynchronous MIMO systems due to the difficulties in...

Ngày tải lên: 20/11/2012, 11:36

... complex Stiefel manifold For further information on derivation and implementation of this hard constraint refer to [1] and references therein The closed form analytical expressions for first and second ... filter for each subband m is obtained using the following expression: where is the center frequency for each subband m, T is the sampling period, and N is the gammatone filter order (N = 4) For a sampling ... frequency domain phenomenon in which a low-level signal can be rendered 32 Chapter inaudible by a simultaneously occurring stronger signal if both signals are sufficiently close in frequency Temporal...

Ngày tải lên: 19/01/2014, 18:20

... of the book deals with applications of signal processing to transform what we hear or see to the form that is most suitable for transmission or storage for a future retrieval The first three ... advancements in signal processing technologies and algorithms In the area of telecommunications, application of signal processing allows for new generations of systems to achieve performance close ... utilizing signal processing to improve system performance and allow for a cost reduction The issues considered range from antenna design and channel equalisation through multi-rate digital signal...

Ngày tải lên: 19/01/2014, 18:20

... of the book deals with applications of signal processing to transform what we hear or see to the form that is most suitable for transmission or storage for a future retrieval The first three ... advancements in signal processing technologies and algorithms In the area of telecommunications, application of signal processing allows for new generations of systems to achieve performance close ... utilizing signal processing to improve system performance and allow for a cost reduction The issues considered range from antenna design and channel equalisation through multi-rate digital signal...

Ngày tải lên: 19/01/2014, 19:20

... complex Stiefel manifold For further information on derivation and implementation of this hard constraint refer to [1] and references therein The closed form analytical expressions for first and second ... filter for each subband m is obtained using the following expression: where is the center frequency for each subband m, T is the sampling period, and N is the gammatone filter order (N = 4) For a sampling ... frequency domain phenomenon in which a low-level signal can be rendered 32 Chapter inaudible by a simultaneously occurring stronger signal if both signals are sufficiently close in frequency Temporal...

Ngày tải lên: 25/01/2014, 13:20

... of the book deals with applications of signal processing to transform what we hear or see to the form that is most suitable for transmission or storage for a future retrieval The first three ... The reconstructed signal can be obtained as Chapter 18 where A straight forward approach for BSS is to identify the unknown system first and then to apply the inverse of the identified system to ... complex Stiefel manifold For further information on derivation and implementation of this hard constraint refer to [1] and references therein The closed form analytical expressions for first and second...

Ngày tải lên: 25/01/2014, 17:20

... incubation on ice for 30 The lysate was centrifuged at 50 000 g for 30 min, and the supernatant recovered for use in the in vitro PLD1 and PrxII interaction assays All steps were performed at °C In ... laboratory members for helpful discussions and critical reading of the manuscript, to J Daniels (Stony Brook University) for the gift of MobA protein, and to S.-G Rhee (NIH) for the gift of several ... Peroxiredoxin antioxidant activity is linked to many signaling pathways, including enhancement of natural killer cell activity, cell proliferation and differentiation, heme metabolism, immune response...

Ngày tải lên: 20/02/2014, 01:20

Ngày tải lên: 27/05/2014, 02:44

... Modified Mean Shift Algorithm For Efficient 15 Although other kernels could be employed, we restrict this Mean Shift study to the case of the uniform kernel The standard Mean Shift algorithm is ... spectrogram images for the processed signal Therefore, we only show the results concerning the spectral based methods We used a one sec 6KHz synthetic signal composed by the addition of two signals The ... algorithms applied to a synthetic signal having in mind that our aim is to obtain a good spectrogram representation of the signal for later IF recognition, and not the 1D signal restoration We used...

Ngày tải lên: 05/06/2014, 12:05

... FIM and is hence invariant to any phase transformation of the signal For simplicity, the EURASIP Journal on Advances in Signal Processing the CRLB for bands above GHz will be exceedingly high ... intelligent choice of the signal in order to enhance those frequencies such that the lower bound becomes minimum For simplicity, assuming the signal is an ideal bandpass signal and the noise is ... is Γ0 Δt (25) If not white, and contingent on knowledge of the process, it may be whitened by a suitable transformation which would necessarily imply a transformation of the signal s The present...

Ngày tải lên: 21/06/2014, 16:20

... same for all users regardless of their distance Note that if the cognitive radio performing user separation is close to the EURASIP Journal on Advances in Signal Processing 100 100 95 95 Performance ... UL user signal as well as availability of information on the basic OFDMA system parameters such as FFT size, sampling time, and cyclic prefix (CP) duration Considering scenarios where information ... the τ versus ξ plane in a 10-user scenario (30 dB SNR is assumed for all user signals over MP channel) dimensions for the best performance This ratio (Dξ /Dτ ) is proportional to the ratio of variances...

Ngày tải lên: 21/06/2014, 19:20

... Estimator for NPWM The scheme with oversampling plus noise shaping implements the Uniform sampled PWM (UPWM) To further reduce the THD a Natural PWM (NPWM) modulation can be realized For NPWM, ... level-shifting circuitry is used for high-side gate driving Discrete power MOS are available EURASIP Journal on Embedded Systems t p = pulse width; S2 SLI SΔC T = sampling period; S1 = past uniform ... analysis proves that for L > the complexity increase is not justified by a performance gain which is limited if compared to ternary PWM While the power output stage can be the same for and levels PWM,...

Ngày tải lên: 21/06/2014, 20:20

... system for real-time digital processing of medical ultrasound Doppler signals” by Stefano Ricci et al develops an embedded Doppler ultrasound (US) system for real-time processing of digital US signals ... consists of a microfluidics part for sample preparation and hybridization, a microsystem part for electronic detection, and a multicore reconfigurable processing part for data analysis The proposed ... improvement in signal resolution over analogue techniques The paper entitled “A two-microphone noise reduction system for cochlear implant users with nearby microphones—Part I: signal processing...

Ngày tải lên: 21/06/2014, 22:20

... Signal Processing 2.2 Z The received signal model for polarization sensitive array Assume that a signal b(t) arrives at the uniform linear array with M pairs of crossed dipoles The received signal ... variables [11] In our present context, for source-wise independent source signals, kB = min(N, K); for source-wise independent polarization, kS = min(2, K), and therefore, (24) becomes min(2, K) + M ... (BER) performance of the proposed blind PARAFAC signal detection algorithm The number of Monte Carlo trials is 1000 The PARAFAC algorithm does not require DOA information and polarization information...

Ngày tải lên: 22/06/2014, 19:20

... MIMO area For the case of channel state information (CSI) at the transmitter, the link performance can be enhanced by appropriate signal processing at the transmitter before emitting the signal ... σN is assumed to be the same for all receivers for a more convenient notation Note that in general we have to expect different noise variances for each receiver if, for example, independent automatic ... outperformed by the QRD pre and postsort approach (bullets) proposed by [71] only for large numbers of antennas N ≥ 10 when a complex calculation would be performed For the real-valued signal...

Ngày tải lên: 22/06/2014, 23:20

... “Crosstalk models for short VDSL2 lines from measured 30 MHz data,” Karipidis et al propose measurement-based crosstalk models for VDSL In “Error sign feedback as an alternative to pilots for the tracking ... capacity coding for discrete multitone (DMT) systems with impulse noise” by Ardakani et al proposes a methodology for the design of the newly emerged low-density parity-check (LDPC) codes for a DMT ... Travel Grants in 2003, 2004, and 2005; the K.U Leuven Bursary for Advanced Foreign Scholars in 2004; and the UniQuest Trailblazer Prize for Commercialization in 2005 Iain Collings was born in Melbourne,...

Ngày tải lên: 22/06/2014, 23:20

... comparison for optimal and suboptimal input signals of Figure 19 for the identification of the Wiener-type model of Table Mean variance for optimal signal Mean variance for suboptimal signal Mean ... 12 tones for the estimation of an M = FIR filter: optimised signal (circles) and, for reference, the spectrally flat signal (crosses) 6.1.1 DMT signal with bandwidth [0, π] 6.1.2 DMT signal with ... optimal Nc = 12 DMT signal and the spectrally flat Nc = 12 DMT signal 6.1.3 Comparison of the estimation performance of bandpass DMT signals Now that the optimal bandpass input signal for a linear FIR...

Ngày tải lên: 23/06/2014, 01:20

... Transmitted signal frame structure and timing converting and reception filtering For a period of signal frame (TF ), the sampled data sequence of Y (t) at a receiver is arranged in a matrix form as ... different from that of [16] for improving signal detection at the first and last L symbols in each transmitted frame If a large receive antenna number is not feasible, oversampling with larger reception ... algorithm presented in the next section 4.2 Signal property projection DSTM employs PSK signaling so that transmitted signals have MCM characteristics Therefore, an alternating projection method from...

Ngày tải lên: 23/06/2014, 01:20

... transmitted signal information, and Amc and Ams are the information-bearing signal amplitudes of the quadrature carriers In Equation 1.38, for constant θm , s m (t) represents the PAM signal, while for ... Algorithms 24 Signal Processing for Multiaccess Communication Networks Part X: Emerging Techniques and Applications 25 Time–Frequency Signal Processing for Wireless Communications 26 Monte Carlo Signal ... 1.3.2 Different Modulation Schemes 1.3.2.1 Phase Shift Keying In this type of digital modulation technique the modulating data signals shift the phase of the constant amplitude carrier signal...

Ngày tải lên: 04/07/2014, 08:31

... (PSD) is calculated for each signal, which is a mixture of the desired component and possibly other unwanted signals and noise Therefore, when the PSDs are computed for a set of signals in a defined ... value for 40 elements in the feature vector is (slightly) larger than that for 34 elements, the variance for 40 is nearly three times that for 34 elements Therefore, a length of 34 elements for ... encompasses events of the same class If the RBF network is to classify four different classes, there must be four different regions (four dotted contours), one for each class Ideally, each of these...

Ngày tải lên: 12/08/2014, 03:21