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________ is a line coding technique in which a special bipolar sequence is inserted into the electrical signal whenever eight consecutive logical “0s” are detected. 

Orthogonal frequency division multiplexing (OFDM) divides the operating spectrum into multiple subcarriers that are used to transmit data in parallel.  By using several subcarriers extended over a larger frequency spectrum, OFDM provides greater immunity from RFI compared to narrow band frequency channels (i.e., narrow band FDM).

Determine the signal-to-noise ratio (SNR) in dBs given the following information:  received signal power, S = 1E-10 mW, T (Kelvin) = 278 degrees, bandwidth, B = 36MHz.

15W = ________dBm

A binary word consisting of 16 logical bits can represent _____  symbols.

Select the correct statement(s) regarding electric, electromagnetic, and optical signals.

Given the following FM modulated signal equation and Kvco, determine the original message m(t) and frequency bandwidth:  s(t)=2cos(2π(4MHz)t + 3sin(2π(4kHz)t)), Kvco =4000 (Hz/v)

Characteristics of a properly filled hemacytometer include:

What is true about viewing a signal in either the time or frequency domain?

Determine the Shannon Theoretical maximum capacity (bps) given the following information:  SNR=100, B (bandwidth)=20kHz