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This book describes a modulator-demodulator circuit which can execute different modulation schemes like- AM, ASK, BPSK, FSK & QPSK. Both the LUT based implementation and complete VHDL based implementations have done by using digital high frequency carriers. In the first step to realize the whole modulation and demodulation schemes using MATLAB Simulink. The format of a VHDL program is built around the concept of BLOCKS which are the basic building units of a VHDL design.

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, Bangladesh. The experiment comprised two ages of tiller seedlings viz. 25 and 35 days old, three levels of tiller seedling per hill viz. 1, 3 and 5 seedlings per hill and three USG levels viz. 0, 1.8g and 2.7g USG. Transplanting 25-day old tiller seedlings was found to be suitable in respect of vegetative growth and grain yield. Transplanting of 5 tiller seedlings per hill appeared to be suitable for the cultivation of transplant Aman rice. Urea super granules (USG) 1.8 g at 10 days...