On the combined signal, downconvert the cosine (inphase, I) and the sine (quadrature Q) arms, then proceed to do independent demodulation on each arm. Summarizing, (a) It is the need for improved spectral efficiency that resulted in I-Q modulation (and de-modulation). (b) Another approa...
Modulation includes varying the fundamental properties of the basic signal by superimposing it with a carrier signal. This is done so that the basic signal can be carried from one location to another. Modulation is essential for many tasks like video chatting and talking to people anywhere on the...
For passive RFID, the technology also involves the beam power, passive RFID tags directly from the energy required to obtain the electromagnetic beam. And active radio frequency identification systems, missed the system needs a larger transmission power, electromagnetic waves in the electronic tag t ...
实际通信中,不少信道都不能直接传送基带信号,必须用基带信号对载波波形的某些参量进行控制,使载波的这些参量随着基带信号的变化而变化,即调制 The modulation and the demodulation are in the communications system the most essential function module.In the actual correspondence, many channels all cannot transmit ...
signal makes it into our homes, and for most of us, it involves a modem. A modem can convert the incoming signal from the cable lines coming into your home into a format that a router, and your connected devices, can use. In fact, the word modem is short for modulation demodulation....
aTake therefore no thought for the morrow; for the morrow shall take thought for the things of itself. Sufficient unto the day is the evil thereof 正在翻译,请等待... [translate] aIm going to school 去学校的Im[translate] aA little bit too much salt. 稍微许多盐。[translate] ...
I will be able in soon after to communicate in the conference with the factory to reiterate this question, will need to prepare some materials for this me.Can you provide some detailed involve the packing and the label aspect training material?
Multimedia modulation signal construction that reduces the need for additional management capacityA transmission system is disclosed which permits the receiving end to demodulate multi-valued modulated symbols successfully under fading conditions and reduces the amount of transmit reference data to improve ...
aThe DISTRIBUTOR shall act in its own name and for his own account, that is, as an independent merchant 经销商将作为在它自己的名字和为他自己的帐户,即,一位独立客商 [translate] aTHE USE OF CITRUS FLAVONOIDS IN INFECTIONS. 对柑橘黄酮类化合物的用途在传染。 [translate] a공군사관학교...
Thanks for the replies so far Title:Re: DSP Engineering, need some information Post by:nctnicoonNovember 11, 2013, 09:16:53 pm Well besides filters which come in many forms depending on roll-off, phase shift and pass/stopband ripple there is FFT, Goertzel, modulation, demodulation, echo ...