spread-spectrum RAKE receiver
Simulation of Spread Spectrum Radar Using Rake at the Receiver End
... sensing. Spread spectrum based digital RADAR can be utilized as a remote sensing device in ...Sequence Spread Spectrum) based digital RADAR at our ...
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Evaluation of Downlink Performance of a Multiple Cell, Rake Receiver Assisted CDMA Mobile System
... In wireless communication, fading is one of the prob- lems that cause the signal fluctuation so it may cause degradation of signal level at the receiver. CDMA as one of the wireless communication types also ...
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MMSE Adaptive Receiver vs. Rake Receiver Performance Evaluation for UWB Signals over Multipath Fading Channel
... correlator receiver by Pateros and Saulnier in the field of “Direct-Sequence Spread Spectrum” (DS-SS) systems employing BPSK signaling in a single user, time- invariant multipath environment; these ...
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BER Performance Analysis of Rake Receiver in Rayleigh Fading Channel for UMTS environment
... efficient spectrum utilisation and variable user data ...of Rake Receiver under UMTS environment with BPSK modulation technique and the convolutional coding at the transmitter and viterbi decoding at ...
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Design and Performance Analysis of DS-CDMA with Rake and without Rake Receiver Communication System
... Code Division Multiple Access (CDMA) is a spread spectrum technique that uses neither frequency channels nor time slots. In CDMA, the narrow band message is multiplied by a larger bandwidth signal, which is ...
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Performance and Analysis of DS CDMA Rake Receiver
... (DS) Spread Spectrum is often claimed to have particular properties that makes it less vulnerable to multipath ...the rake receiver architecture allows an optimal combining of energy received ...
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A Rake Receiver Model for Filtering White Nose Presence in the Receiving Signals
... he Rake Receivers use maximum ratio combining and multi-user interference suppression to obtain a considerable increase in performance in DS–CDMA system such as ...on Rake receivers, there are still open ...
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A hybrid equalizer/Rake receiver for the Wideband CDMA Downlink in large delay spread channels
... the receiver has to collect sig- nal energy from several ...a Rake receiver allocates so-called fingers to ...The Rake receiver subsequently com- putes a weighted sum of the Rake ...
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A Power Efficient Rake Receiver for Interference Reduction in the Mobile Communication Systems
... the RAKE receiver is in wideband code division multiple access systems ...is spread by the transmitter by orthogonal variable spreading factor (OVSF) and scrambling ...the receiver, the ...
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UWB System Based on the Modified Gegenbauer Function in MISO Channel
... In the simulations, the following Figure 2 shows that, according to a user associated with each order of the Gegenbauer polynomials, performances may vary de- pending on the desired user. By choosing the first 4 or- ders ...
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Design of Reconfigurable and Adjustable Wireless CORDIC Single Core Rake Receiver
... Compared to other approaches, CORDIC is a clear winner when a hardware multiplier is unavailable, e.g. in a microcontroller, or when you want to save the gates required to implement one, e.g. in an FPGA. On the other ...
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DS UWB Signal Generator for RAKE Receiver with Optimize Selection of Pulse Width
... Figure 4 Gaussian doublet in frequency domain The waveform shown in figure 3 is an example of idealized UWB waveform. The transmitting antenna generally does differentiation of the time waveform presented to it. As a ...
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Contemporary Spread Spectrum Techniques: A Comparative Study Ashish G. Nandre 1, Yogesh R. Risodkar2
... Spread spectrum techniques use data independent, random sequences to spread a narrow band information signal over wideband of ...the receiver can correlate the received signal with replicate ...
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DESIGN AND IMPLEMENTATION OF WCDMA RAKE RECEIVER USED IN 3G WIRELESS COMMUNICATION
... of Rake receivers is that they exploit multipath propagation by receiving the multipath components of the transmitted signal separately and combining their ...
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Performance Improvement of Wireless communication System of DS CDMA with Rake Receiver
... 2. WIRELESS CHANNEL MODELING Wireless communication is one of the majoritylively areas of today‟s life. Wirelesschannels have to be simulate accurately and itis very important for the implementing the system. Performance ...
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Rake Receiver Detection of Adaptive Modulation Aided CDMA over Frequency Selective Channels
... the Rake receiver assisted AQAM scheme is shown in ...employing Rake-receivers. Fig. 3(b) shows the throughput of the Rake-receiver assisted AQAM system at the specific SNRs, where the ...
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Time-slot Assignment based mostly Channel Access theme for Reliable Transmission
... added spread spectrum signal to the watermark ...and spread spectrum watermark are embedded in different parts of image so it will make a robust watermark which can transfer in long distance ...
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SECURED COMMUNICATION USING SPREAD SPECTRUM TECHNIQUES
... 3.2 FREQUENCY HOPPING SPREAD SPECTRUM: FH is the type of SS in which the carrier hops randomly form one frequency to another. A common modulation format for FH system is of M-ary frequency shift keying ...
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Interference Suppression for CDMA UWB System using LBER Rake receiver Nimmala Naresh
... the Rake finger coefficients and extend it to suppress MAI in multi-user UWB ...tive Rake receiver uses a least mean square (LMS) type of adaptive algorithm [10], and is referred to as the adaptive ...
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BER Analysis of DS-CDMA Using LMS Algorithm and Rake Receiver
... the receiver can be ...in receiver instead of transmitter sinceno extra transmitter power is needed to install the receiver diversity ...to receiver over multiple paths can be resolved into ...
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