What is the transmitted-reference methods (TR) and what are the advantages of the TR method?
TR modulation technique has the advantage of sending the same pulse twice through an unknown channel where both pulses experience the same type of channel distortion and detection becomes easier with a correlation receiver. Therefore, instead of correlating the distorted received pulse with a “clean” template pulse as in PPM, both the data pulse and so called template (“reference pulse”) are distorted and show high correlation at the TR receiver. Therefore, there is no need for channel estimation in TR receivers. Furthermore, a TR receiver is self-synchronized and eliminates the need for individual pulse synchronization with locally generated templates that exists in PPM scheme. The reason is that each “reference pulse” acts as a preamble for its “data pulse” and has the advantage of providing rapid synchronization. Moreover, synchronization in TR receivers occurs after correlation between the “data pulses” and “reference pulses,” thus the sampling requirements are relaxed to baseband
Related Questions
- What are the advantages of Data One Solutions’ (DOS) backup method opposed to traditional methods of data backup?
- What are the advantages of your method of creating foveated images as compared with other methods?
- What is the transmitted-reference methods (TR) and what are the advantages of the TR method?
