We consider line coding pulses as a pulse train constructed from a basic pulse f(t) repeating at intervals of T with relative strength a k for the pulse starting at t=kT such that the k th pulse in this pulse train y(t) is a kf(t-kT). For instance, the on-off, polar, and bipolar line codes are all

PSD of Line Codes I The PSD of a line code depends on the shapes of the pulses that correspond to digital values. Assume the pulses p(t) are amplitude modulated (PAM),

Abstract: This paper presents two new line-coding schemes, integrated pulse width modulation (iPWM) and consecutive digit chopping (CDC) for equalizing lossy wireline channels with the aim of achieving energy efficient wireline communication.

Abstract—This paper presents two new line-coding schemes, integrated pulse width modulation (iPWM) and consecutive digit chopping (CDC) for equalizing lossy wireline channels with the aim of achieving energy efficient wireline commu-nication.

New line codes have often been designed for use in specific systems, with features to combat particular problems in those systems. Most line codes have three major functions. First, they allow a baseband signal to be conveyed over a channel with d.c. blocking.

HDB3 code is used in 30 channel PCM (Pulse Code Modulation) telephone systems. There are two advantages of this coding method: The coded signal does not contain D.C. component and clock extraction at the receiver is possible. Disadvantage of this code is that it requires twice the bandwidth bandwidth by NRZ type coding. Table 1.

The objective of this lab is to study the properties of pulse-code modulation (PCM), using uniform and nonuniform scalar quantization. Different line codes will also be studied.

the line-coded signal (the baseband signal) undergoes further pulse shaping (to reduce its frequency bandwidth) and then is modulated (to shift its frequency) to create an RF signal that can be sent through free space.

Pulse code modulation is used in almost all modern communication systems and is essential for digital communication. Each sampled value is given in the form of a discrete signal, converted to its binary equivalent, and coded in the form of zeros and ones.

PSD of Line Codes I The PSD of a line code depends on the shapes of the pulses that correspond to digital values. Assume the pulses p(t) are amplitude modulated (PAM),