• No results found

Quadrature phase shift keying (QPSK)

V-Band Quadrature Phase Shift Keying Demodulator Using Wr-12 Six-Port

V-Band Quadrature Phase Shift Keying Demodulator Using Wr-12 Six-Port

... fabricated at 61 GHz, using the rectangular waveguide technology, and on the block diagram presented in [5]. WR-12 is the standardized rectangular waveguide, suitable for V-band and E-band. In the following, the ...

7

DESIGN OF A VERIFICATION TECHNIQUE FOR QUADRATURE PHASE SHIFT KEYING USING MODEL SIM SIMULATOR FOR BROADCAST COMMUNICATION RELEVANCE’S

DESIGN OF A VERIFICATION TECHNIQUE FOR QUADRATURE PHASE SHIFT KEYING USING MODEL SIM SIMULATOR FOR BROADCAST COMMUNICATION RELEVANCE’S

... for Quadrature phase shift keying ...of phase shift keying which is under the digital ...time. Shift keying techniques defines as the carrier bit stream ...

7

Trellis Coded Modulation Schemes Using A New Expanded 16-Dimensional Constant Envelope Quadrature-Quadrature Phase Shift Keying Constellation

Trellis Coded Modulation Schemes Using A New Expanded 16-Dimensional Constant Envelope Quadrature-Quadrature Phase Shift Keying Constellation

... envelope quadrature-quadrature phase shift keying (CEQ 2 PSK) symbols from Saha and Birdsall or four CEQ 2 PSK symbols recently discovered by Cartwright and also introduced ...

78

High dimensionality carrierless amplitude phase modulation technique for radio over fiber system

High dimensionality carrierless amplitude phase modulation technique for radio over fiber system

... include quadrature phase shift keying (QPSK), quadrature amplitude modulation (QAM), and orthogonal frequency division multiplexing (OFDM) with coherent detection and digital signaling ...

54

DESIGN OF QPSK MODULATOR FOR WI-FI AND DSP APPLICATIONS

DESIGN OF QPSK MODULATOR FOR WI-FI AND DSP APPLICATIONS

... for Quadrature phase shift keying ...of phase shift keying which is under the digital ...time. Shift keying methods describes as the carrier bit stream ...

6

SECURITY IN COGNITIVE RADIO NETWORK

SECURITY IN COGNITIVE RADIO NETWORK

... (Quadrature Phase Shift Keying is a DSBCS modulation scheme with digital information for the ...quadriphase Phase Shift Keying, 4-Phase Shift Keying ...

7

DPSK OFDM System for Reliable Data Transmission using QRcode System in Mobile Devices

DPSK OFDM System for Reliable Data Transmission using QRcode System in Mobile Devices

... The OFDM modulation uses orthogonal frequency subcarriers to transfer data and boot con fine image blur, which is essentially a low pass filter, to an arm and a leg frequency components one that low frequency data bits ...

7

Performance Comparison of Digital Modulation Techniques used in Wireless Communication System

Performance Comparison of Digital Modulation Techniques used in Wireless Communication System

... amplitude shift keying (ASK), quadrature phase shift keying (QPSK), binary phase shift keying (BPSK), frequency shift Keying (FSK) ,On-off ...

7

Performance Evaluation of ½ Rate Convolution Coding with Different Modulation Techniques for DS CDMA System over Rician Channel

Performance Evaluation of ½ Rate Convolution Coding with Different Modulation Techniques for DS CDMA System over Rician Channel

... Binary phase shift keying (BPSK), Quadrature phase shift keying (QPSK) and Quadrature amplitude modulation (QAM- 16) for direct sequence code division multiple ...

5

Comparative Study of Digital Modulation Techniques Using MATLAB

Comparative Study of Digital Modulation Techniques Using MATLAB

... Amplitude shift keying(ASK),quadrature phase shift keying(QPSK),binary phase shift keying(BPSK),frequency shift keying(FSK),on- off ...

7

Evaluation of SNR for AWGN, Rayleigh and Rician Fading Channels Under DPSK Modulation Scheme with Constant BER

Evaluation of SNR for AWGN, Rayleigh and Rician Fading Channels Under DPSK Modulation Scheme with Constant BER

... like Phase shift keying(PSK), Frequency shift keying(FSK), Minimum shift keying(MSK), Quadrature phase shift keying(QPSK), Quadrature ...

6

FPGA Implementation of QPSK modulator by using Hardware Co-simulation

FPGA Implementation of QPSK modulator by using Hardware Co-simulation

... (Quadrature Phase Shift Keying) is one of the modulation schemes used in wireless communication system due to its ability to transmit twice the data rate for a given ...

8

Online Full Text

Online Full Text

... division multiplexing (PDM). The use of PDM permits multiplying the transmission capacity, as different signals can be transmitted over orthogonal states of polarization of the same light [1]. Optical label switching ...

5

Article Description

Article Description

... The output for the performance of mobile WiMAX was estimated by the Bit Error Rate and the Signal to Noise Ratio plot using the MATLAB coding with Quadrature Phase Shift Keying modul[r] ...

6

Experimental demonstration of cap transmitter using very high speed IC hardware description language (VHDL)

Experimental demonstration of cap transmitter using very high speed IC hardware description language (VHDL)

... Just like OOK, Binary Phase Shift Keying (BPSK) also using symbol ‘1’ and ‘0’ to modulate the phase of the carrier. Logical ‘1’ is represented as sin ɷt while ‘0’ represented as – sin ɷt. The ...

39

OFDM in Free Space Optical Communication System

OFDM in Free Space Optical Communication System

... OFDM is a kind of multicarrier transmission in which high data rate streams are split into lower rate streams and then transmitted simultaneously over several narrow-band subcarriers. The subcarriers are themselves ...

7

Comparative Study of Bit Error Rate with Channel Estimation in OFDM System for M ary Different Modulation Techniques

Comparative Study of Bit Error Rate with Channel Estimation in OFDM System for M ary Different Modulation Techniques

... M-ary Phase Shift Keying (M-PSK) and M-ary Quadrature Amplitude Modulation (M-QAM) in Least Square Error (LSE) algorithm reduce more error as compared to LSE and MMSE algorithm and is an ...

5

BER Performance Simulation of OFDM System with Channel Estimation using M-PSK and M-QAM

BER Performance Simulation of OFDM System with Channel Estimation using M-PSK and M-QAM

... M-ary phase shift keying (M-PSK) and M-ary quadrature amplitude modulation (M-QAM) in comb type (pilots insert in the time domain) pilot based Least Square Error (LSE) channel estimation ...

8

Adaptive OFDM Modulation Used For SDR

Adaptive OFDM Modulation Used For SDR

... One or more bits from the channel coding step are assigned to each subcarrier then modulated using a simple technique such as phase shift keying (PSK) or quadrature am[r] ...

5

DESIGN OF SIMULINK MODEL FOR OFDM AND COMPARISON OF FFT- OFDM AND DWT-OFDM.

DESIGN OF SIMULINK MODEL FOR OFDM AND COMPARISON OF FFT- OFDM AND DWT-OFDM.

... To generate a baseband OFDM symbol, a serial digitized data stream is first channel coded and then modulated using phase shift keying (PSK) or quadrature amplitude modulation (QAM). These data ...

11

Show all 10000 documents...

Related subjects