نتایج جستجو برای: دمدولاتور bpsk

تعداد نتایج: 1172  

2013
XUEFEI LI VYACHESLAV TUZLUKOV

In this paper, we discuss the performance of the orthogonal frequency division multiplexing (OFDM) wireless communication systems using the binary phase shift keying (BPSK) modulation over Rayleigh fading channel implementing the generalized receiver (GR) constructed in accordance with the generalized approach to signal processing in noise. We compare OFDM-BPSK wireless communication systems ba...

2012
Mehmet SÖNMEZ Ayhan AKBAL

Binary phase shift keying (BPSK) and quadrature phase shift Keying (QPSK) modulation techniques are often proposed for satellite communications and band-limited communication channels; however, both modulations are important in high speed data communications. High speed data communications are implemented on high speed hardware in wireless systems. The paper presents the design of a QPSK and BP...

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2012
Monire Faridzadeh Asghar Gholami Zabih Ghassemlooy Sujan Rajbhandari

In this paper a hybrid modulation scheme based on pulse position modulation (PPM) and binary phase shift keying subcarrier intensity modulation (BPSK-SIM) schemes for free-space optical communications is proposed. The analytical bit error rate (BER) performance is investigated in weak and saturated turbulence channels and results are verified with the simulation data. Results show that performa...

Journal: :Optics express 2012
Kishore Padmaraju Noam Ophir Qianfan Xu Bradley Schmidt Jagat Shakya Sasikanth Manipatruni Michal Lipson Keren Bergman

We demonstrate the generation of error-free binary-phase-shift-keyed (BPSK) data at 5 Gb/s using a silicon microring modulator. The microring-modulated BPSK signal is propagated at fiber lengths up to 80 km, maintaining error-free performance, while demonstrating resilience to chromatic dispersion. Bit-error-rate measurements and eye diagrams show near equivalent performance of a microring-base...

2012
Mehmet SONMEZ Ayhan Akbal

This paper presents the simulation results of binary digital modulation schemes. In this paper, for BASK and BPSK modulation techniques used FPGA algorithm, multiplier don't using. If multiplier block is used for multiplication bit stream with carrier signal, used time will rises. In addition using multiplier block obtained simulation results were analyzed and compared to other simulation ...

2005
Qinghui Tang Sandeep K. S. Gupta Loren Schwiebert

An On-Off keying based minimum-energy coding scheme with coherent receiver has been shown to provide better performance than BPSK. This paper presents a closed-form expression of the BER performance of that scheme over an AWGN channel with either a coherent receiver or a noncoherent receiver. In this paper, a more conservative result is obtained due to a better characterization of the average e...

2012
Anwar Ul Haque Muhammad Saeed Farhan Ahmed Siddiqui

Modulation plays an important role in transmission of single from transmitter to receiver in all communication systems. But it is vital in wireless communication and a lot of communication features including (data rate, error rate, symbol rate, bandwidth etc) depends upon it. In NS2 wireless network simulation BPSK is used for digital encoding and modulation of data [1,2]. The BPSK method is us...

2002
Gary Mitchell

In the small satellite world, it is becoming increasingly popular to use a constellation of small satellites to do the work previously performed by one large satellite. Implicit in this scenario is the requirement for clusters of small satellites to communicate among themselves via an inter-satellite link (ISL). Traditionally, an ISL has taken the form of a time-division-multiple-access (TDMA) ...

Journal: :Optics express 2013
Tiantian Li Junlong Zhang Huaxiang Yi Wei Tan Qifeng Long Zhiping Zhou Xingjun Wang Hequan Wu

A low voltage, high speed, compact silicon Mach-Zehnder Interferometer (MZI) modulator for Binary Phase Shift Keying (BPSK) modulation has been demonstrated. High modulation efficiency, VπLπ equals to 0.45V·cm, was obtained in a 1mm length device owing to a higher doping concentration and low-loss traveling-wave electrode. 25 Gb/s non-return-to-zero(NRZ)-BPSK with 6Vpp RF driving signal was ach...

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