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Across 4. Main disadvantage of PCM is _________ bandwidth 8. split-phase code is also known as ___ code 9. In PCM, an intersymbol interference can be reduced by designing a proper ______ 12. In TDM system, each signal is alloted in a frame having a uniform and fixed _______ slot 13. ______ is used in PCM to get uniform S/N ratio 15. In PCM, Quantization noise depends on number of ________ levels 17. word length of a 64 quantization level PCM for S=2 is 18. DM needs ___________ circuitry as compared to PCM 19. pulses stuffed into spaces provided for empty time slots, known as (2 Words) 20. ________ modulation is digital in nature

Down 1. signal variations are within the step size is known as ________ noise 2. word length of a 64 quantization level PCM for S=4 is 3. better performance in presence of noise is the case for ____ (3 Words) 5. PAM is _____time signal 6. in DM, the slope overload distortion can be reduced by_______ the step size 7. Standard data rate of PCM _______ channel is 64kbps 10. pulse stuffing is used in ___________ TDM 11. In _________ TDM, signals to be multiplexed are band limited to same frequencies. 14. A DM system, adjusts its step size is known as _______ Delta Modulation 16. the BW requirement of DM is _____ as compared to PCM