PNSEQ
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Component Specifications Numbers IC 7474 IC 555 IC 7486 IC 7404 IC 7408 Dual D – Flip Flop Timer IC EX-OR dual i/p quad IC NOT IC, AND IC 5 2 2 1 1 Basically we spread the digital data using PN sequence with help of transistor . The input data which is to be sent using any transmitter is made secure with help of direct sequence spread spectrum (DSSS) and our final output is spread data that can be directly fed to the input of any transmitter . Eg QPSK’s input. Guide :Prof. P.A.KULKARNI AKSHAY MEDHANE roll no. 01 year – T.e. div – m PRANAV NAYAR roll no. 10 year – T.e. div – m DNYANRAJ NIMBALKAR roll no. 12 year – T.e. div – m SNEHAL PAGDHUNE roll no. 15 year – T.e. div – m ● Digital data is generated of 3 bit using D-flip flop. ●Pseudo noise (PN) sequence is generated using 3 D flip-flops, ie 7-bit PN sequence. ●Digital data and PN sequence both need to be converted to NRZ format . ● This two data’s are given to transistor which firstly converts them to NRZ and then . multiplies the two sequences as well. ● Each second clock pulse resets the counter IC . ●Second BJT is used as a switch. Output is taken at collector pin of this BJT ● Timer IC’s generates two clocks of frequency 1KHz and 7KHz. ● From first set of D flip flops we get PN sequence of 7 bits of frequency 7KHz. ● And from other set we get Digital data of 3 bits of frequency 1Khz. ●Final output is multiplication of PN sequence and Data in NRZ format.
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project poster on PN sequence generator
Transcript of PNSEQ
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Basically we spread the digital data using PN sequence with help of transistor . The input data which is to be sent using any transmitter is made secure with help of direct sequence spread spectrum (DSSS) and our final output is spread data that can be directly fed to the input of any transmitter .Eg QPSKs input.Guide :Prof. P.A.KULKARNI AKSHAY MEDHANE roll no. 01year T.e.div mPRANAV NAYAR roll no. 10year T.e.div mDNYANRAJ NIMBALKAR roll no. 12year T.e.div mSNEHAL PAGDHUNE roll no. 15year T.e.div m Timer ICs generates two clocks of frequency 1KHz and 7KHz. From first set of D flip flops we get PN sequence of 7 bits of frequency 7KHz. And from other set we get Digital data of 3 bits of frequency 1Khz.Final output is multiplication of PN sequence and Data in NRZ format.
ComponentSpecificationsNumbersIC 7474 IC 555 IC 7486IC 7404 IC 7408Dual D Flip FlopTimer ICEX-OR dual i/p quad IC NOT IC,AND IC52211
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