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Description: QPSK的VERLOG源码，在MODELSIM下的一个工程，有测试向量。-QPSK VERLOG source of the MODELSIM of a project, test vector.
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Size: 23552 |
Author: 刘仪 |
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Description: This is a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. The receiver includes an NDA timing recovery loop followed by a DD phase recovery loop. -This is a model of a QPSK modulation system f or transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC
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Size: 15360 |
Author: xiaoying |
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Description: psk costas 载波恢复
psk_carrier_recover_costas-psk costas carrier recovery
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Size: 1024 |
Author: zilang |
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Description: M-PSK Recovery for Modem Design.
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Size: 2048 |
Author: Southern Lord |
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Description: Phase-shift keying (PSK) is a modulation process whereby the input signal, a binary PCM waveform, shifts
the phase of the output waveform to one of a fixed number of states. The demodulation process can be divided into three major subsections, as shown by Figure 4. First, since
the incoming waveform is suppressed carrier in nature, coherent detection is required. The methods by
which a phase-coherent carrier is derived from the incoming signal are termed, carrier recovery, and will be
covered first.
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Size: 82944 |
Author: lala |
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Description: Thus PSK systems require less transmitted power for a given probability of
error than ASK or FSK systems.
Synchronous detection of PSK signals is required,due to the absense of a large
carrier component.Carrier recovery is there for emore complex and expensive.
DPSK systems are often a good compromise,offering simpler circuit ryata
small performance cost.The PSD of a PSK waveform is centered around!c,
and has an identical shape to that of the double side band modulating spectral
density
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Size: 28672 |
Author: lala |
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Description: PSK信号解调中的定时恢复算法，该算法采用的是早晚门算法，效果较好-Timing recovery algorithm used by PSK demodulator.
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Size: 2048 |
Author: 陈建文 |
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Description: 针对非协作通信条件下PSK 信号识别问题提出了一种基于星座图恢复的MPSK/MDPSK信号调制方式盲识别系统-A system for blind modulation recognition of MPSK/MDPSK signals based on constellation recovery is
proposed for non-cooperative communication applications
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Size: 483328 |
Author: 小丸子 |
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