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The telemetry system of a geostationary communications satellite samples 150 sensors on the spacecraft in sequence. Each sample is transmitted to earth as 10 eight-bit words in a TDM frame. An additional 200 bits are added to the frame for synchronization and status information. The data are then transmitted at a rate of 2.0 kilobit per second using binary phase shift keying (BPSK) modulation of a low power carrier. a. How long does it take to send a complete set of samples to earth from the satellite? b. Including the propagation delay, what is the longest time the earth station operator must wait between a change in a parameter occurring at the spacecraft and the new value of that parameter being received via the telemetry link? (Assume a path length of 37 000 km.)
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- Problem 4: A leased telephone line of bandwidth 4 kHz is used to transmit binary data. Calculate the data rate (in bits per second) that can be transmitted if we use: a. Polar signal with Manchester (split-phase, twinned-binary) pulses. b. On-off signal with rectangular half-width (RZ) pulses.arrow_forwardWhy do we utilize periodic analogue signals and non-periodic digital signals for data transmission?arrow_forwardEE HELP PLSSSSSSSarrow_forward
- Explain frequency hopping acquisition scheme using a simple PN sequence. Assume that the length of PN sequence is 15 and the number of frequency hopping levels is 8arrow_forwardGiven the data stream 00101110, sketch the transmitted sequence of pulses for each of the following line codes: a. Unipolar NRZ b. Bipolar RZ C. Manchester codearrow_forwardSelect the correct statement regarding transmission systems. a. only unguided systems need to worry about EM noise since most guided system use signal balancing or shielding b. signal attenuation is independent of the baseband or carrier frequency c. the type of modulation method selected will influence digital data capacity d. all statements are correctarrow_forward
- Assume that an AM system operates with an index of 0.8 and that the message signal ism(t) = 4cos(2(750)t). Compute the SNR in terms of NW (consider only two digits after the decimal point) Answer: Consider an AM system that operates with an index of 0.76 and consider a message signal m(t) = used, answer the following questions: 100cos(200nt). Assuming that coherent demodulation is 1- Determine the efficiency. Answer 2- Determine the output SNR in terms of (NW) Pr (N,W) Answer 3- Determine the detection gain. Answer 0.224 0.76 1.52 100 2 0.448 1 3.04 200 TOSHIBAarrow_forwardFor a FM system, the maximum freq deviation is 75 kHz and the maximum freq of the info. signal is 10 kHz. What will be the total bandwidth of the FM system? What will be the modulation index?arrow_forwardQ.1) What is the length (period) of a chip for a the GPS C/A code signal? How much is that in metres?arrow_forward
- Problem 2)- The figure below shows the binary input data and carrier signal that used in a optical comm system. Determine the data rate and baud rate for the following modulation schemes: a) Binary Phase Shift Keying b) Binary Frequency shift Keying. Assume the carrier swing is 3MHz. Input data Carrier 9 1 ' Sus Susarrow_forwardDigital communications 2arrow_forwardA digital communication link consists of nine regenerative repeaters along with a receiver. Signal from the transmitter is BPSK and regenerative repeaters have a bit-error probability of 5 times 10 -8 . (a) Calculate the overall probability of error. (b) Calculate the overall probability of error if regenerative repeaters are replaced by repeater amplifiers. Please solve as soon as possible..I`ll surely give a big like.arrow_forward
- Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSONDelmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage LearningProgrammable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
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