Assume the channel bandwidth is 3100 Hz and the maximum data rate is 35 kb/s. To improve the maximum data rate by 60%, how many times should the signal-to-noise-rate (SNR) increase? Based on the improved maximum data rate and SNR, if the SNR further increases by 10 times, can the maximum data rate further increase by 20%?

Assume the channel bandwidth is 3100 Hz and the maximum data rate is 35 kb/s. To improve the maximum data rate by 60%, how many times should the signal-to-noise-rate (SNR) increase? Based on the improved maximum data rate and SNR, if the SNR further increases by 10 times, can the maximum data rate further increase by 20%?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

ChapterS: Safety, Basic Electricity And Ohm's Law

Section: Chapter Questions

Problem 8RQ: What is an MSDS?

See similar textbooks

Similar questions

Given an ideal 6 bit ADC with a reference voltage of 640mV, what is a VLSB of this ADC? What is the rms value of its quantization errors ?
What is the value of RC for an 8-bit single-ramp ADC with VFS = 5.12 V, VR = 2.000 V, and fC = 1 MHz?
The clock select register for channel A in an MC68681 DUART has bits 0 through 3 set to 0, 0, 0, and 1, respectively. What is the baud rate of the transmitter? What is the bit-‐‑time (or duration) for each bit transmitted?
When the number of bits in a PCM mode, n, is 3, what is the dynamic range in dB?
Output data ratio of a 8-bit PCM-TDM system sampling 24 voice channels, comparing these using μ -law at the rate of 8 kHz and with a I frame alignment word, is ?
Suppose that the spectrum of a channel is between 12 MHz and 18 MHz, and an intended capacity of 10 Mbps.(A) What should be the SNR to obtain this capacity?(B) How many signaling levels are required to obtain this capacity?(C) What would be the capacity if the environment starts suffering lesser noise and the SNR goes up to 30 dB.(D) Same question as (B) but for the capacity in (C)
For a CD audio system, the analog signal is digitized such that the signal to quantization ratio is maintained at least 96dB. The sampling is performed at 44100Hz. a) What is the minimum number of quantization levels required to attain the given signal to quantization noise ratio?b) How many bits per sample are required when levels are identified in part a)?c) Identify the data rate in bits/s for the system.
Exxplain the rellation between BER and E/N_0, where E is the energy per bit,N_0 is the noise spectral density, BER is the bit error rate. What is the reason for usign channel coding?
We need to use synchronous TDM and combine 20 digital sources, each of 100 Kbps. Each output slot carries 1 bit from each digital source, but one extra bit is added to each frame for synchronization. Answer the following questions: (a)What is the size of an output frame in bits? (b)What is the output frame rate (frame/s)? (c)What is the duration of an output frame? (d)What is the output data rate? (e)What is the efficiency of the system (ratio of useful bits to the total bits).
a noiseless 4kHz channel is sampled every 1msec, What is the maximum data rate? How does the maximum data rate change if the channel is noisy, with a signal to noise ratio of 30db?
A digital communication link carries binary-coded words representing samples of an input signal: ??(?) = 3 cos 600?? + 2 cos 1800?? The link is operated at 10,000 bits/s and each input sample is quantized into 1024 different voltage levels. 1. What are the sampling frequency and the folding frequency?2. What is the Nyquist rate for the signal ??(?)?3. What are the frequencies in the resulting discrete-time signal ?(?)?4. What is the resolution ∆?
A CDMA system delivers message to N = 40 users with equal power. The message is transmitted at a rate of 10 kbps, using a DS spread spectrum signal operating at a chip rate of 2MHz. a. What is a bit period?b. What is a chip period?c. What is the processing gain of the system?