Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 45 for “"BPSK"”.
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BPSK system analysis using MEMS filters
… is not acceptable. This thesis will simulate a BPSK architecture to develop an understanding that the post-CMOS filters can reliably be trusted upon in communication systems. The initial system to be simulated will be a 5-channel MEMS filter. This thesis will also present actual results of the …
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Ambient ZeroScatter: Ambient BPSK and QPSK Backscatter Communication using Existing Digital I/O Pins
… can be re-purposed as binary phase-shift keying (BPSK) backscatter modulators in the UHF and microwave bands with zero added components, and that multiple digital I/O pins can be used in combination with series or shunt impedances to produce quadrature phase-shift keying (QPSK) backscatter …
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Design, Implementation and Assessment of BPSK and QPSK PAPR over OFDM signals using LimeSDR
… modulated either by Binary Phase Shift Keying (BPSK) or Quadrature Phase Shift Keying (QPSK), which then brought in the question “What was their contribution to Peak-to-Average Power Ratio (PAPR) in an OFDM system?”. Consequently, this project compared BPSK and QPSK in terms of PAPR in OFDM …
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A Wireless Call Button Network Design
… form of traditional Binary Phase Shift Keying (BPSK) modulation scheme for the radios is proposed. The proposed modulation scheme, like differential BPSK, can be detected non-coherently but it offers better performance than differential BPSK. Its implementation includes an innovative tracking …
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Architecture for ultra-low power multi-channel transmitters for Body Area Networks using RF resonators
… time, simple modulation schemes of OOK, FSK and BPSK and high datarates of 1Mbps. An architecture that is suited for the unique requirements of transmitters in these BANs is developed. RF Resonators, and in particular Film Bulk Acoustic Wave Resonators (FBARs) are explored as carrier frequency …
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Bit error simulation of FSK, BPSK, and pi/4 DQPSK in flat and frequency-selective fading mobile radio channels using two-ray and measurement- based impulse response models
… tool, we studied average BER results for FSK, BPSK, and Ï /4 DQPSK with Nyquist pulse shaping in indoor and outdoor, flat and frequency-selective fading channels. The BER performance of Ï / 4 DQPSK using the data rate and the pulse shaping requirement in the U.S. Digital Cellular Standard are …
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Analysis of RF Front-End Non-linearity on Symbol Error Rate in the Presence of M-PSK Blocking Signals
… performance loss can be as high as 4.7 dB for BPSK modulated signal and BPSK modulated blockers when received in sync with the desired signal. When blockers have a random phase offset with respect to the desired signal, the performance degradation is about 2 dB for BPSK modulated desired and …
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Orthogonal Frequency Division Multiplexing Modelling
… 32QAM and 64QAM, Binary phase shift keying (BPSK), eight phase shift keying (8PSK), quadrature phase shift keying (QPSK), 16QAM, 32QAM and 64QAM OFDM modulation techniques were used. Channel noise is modelled by adding a white Gaussian noise (AWGN). The channel noise variance decreases with …
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Quadrature amplitude modulated codes with low peak-to-mean envelope power ratio for orthogonal frequency division multiplexing applications
… binary Golay complementary sequences into BPSK yields OFDM signals with low PMEPR. Frank, Sivaswamy, and others have extended the results of Golay from binary phase shift keying (BPSK) to other PSK constellations. Recently, Davis and Jedwab presented a code structure for these PSK …
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All-semiconductor High Power Mode-locked Laser System
… studied. The full characterization of 10-Gb/s RZ-BPSK (return-to-zero binary PSK) data has been demonstrated. Fast lockup and walk-off of the all-optical timing synchronization process on the order of nanoseconds were measured in both simulation and experiment. Phase stability of the recovered …
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Analysis of digital communication signals and extraction of parameters
… considered include Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), Frequency Shift Keying (FSK), and On-Off Keying (00K). The analysis emphasizes the use of available signal processing software. Detection methods compared include broadband energy detection, FFT- based …
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Energy-Efficient Multicarrier and Multicarrier-CDMA Systems
… of OFDM signals for Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), and -QPSK are obtained as a function of number of subcarriers in the system. It is shown that PAPR reductions up to can be achieved using the proposed methods for a 128-subcarrier OFDM system. These …
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100 Gbps ptical coherent modem for low earth orbit optical inter-satellite links
… rate performance is 5.625 Gbps using coherent BPSK detection, achieved by the Tesat and DLR laser communication terminal (LCT) in 2008. The Tesat and DLR LCT demonstrated LEO to LEO OSLs over a link distance of 5100 km.
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On performance analysis of optimal diversity combining with imperfect channel estimation
… channel knowledge. The bit error rate for BPSK modulation over correlated Rayleigh and Ricean fading channel is derived for minimum mean square channel estimation using pilot symbol assisted modulation. Analytical result and Monte-Carlo simulation are presented for specific channel and …
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PAPR reduction in OFDM communications with generalized discrete Fourier transform
… of SCFDMA systems for Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK) and 16 Quadrature Amplitude Modulation (16-QAM), digital modulation techniques are increased.
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Towards optimal capacity-achieving transceivers with photonic integrated circuits
… towards a turbulence-resistant integrated BPSK transmitter and joint detection receiver channel that achieves superadditive channel capacity in the low mean photon number regime.
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Physical Layer Design for a Spread Spectrum Wireless LAN
… shift keying/quadrature phase shift keying (BPSK/QPSK) non-coherent receiver to overcome the adverse indoor wireless environment. Moreover, a variable data rate transmission technique is used to dynamically configure the spread spectrum system according to channel performance. This physical …
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Cyclic prefix assisted block transmission for low complexity communication system design
… on the proposed channel estimation scheme for BPSK block transmission system as well as CP-CDMA system using simulation along with analysis.
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Orthogonally coded MIMO array for Ka-band (26.5 - 40 GHz) millimeter-wave imaging
… system that utilizes binary phase-shift keying (BPSK) modulation of the intermediate frequency (IF) signals with orthogonal codes, commonly called code division multiple access (CDMA). This method allows the array to distinguish the radar back-scatter for each transmitter of the imaging system …
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