HW2 - ECEN 661 - Modulation Theory Homework #2 Assignment...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
ECEN 661 - Modulation Theory Homework #2 Assignment Date: 1/26/06, Due Date: 2/2/06 1. Text 4.3. 2. Text 4.10 3. Text 4.11 4. For each of the following modulation formats, derive an expression relating the minimum (Euclidean) distance between points in the signal constellation, , and the average transmitted energy per bit, . Note the average energy per bit can be expressed as the average energy per transmitted symbol divided by the number of symbols per bit. (a) M-ary ASK (b) M-ary QAM (c) M-ary PSK (d) M-ary FSK 5. Design Problem Suppose we wish to send data using a 16-ary modulation format. Our goal is to construct a two- dimensional linear modulation format such that the efficiency of the modulation format is maxi- mized. We will discuss efficiency later in class. For now it is sufficient to define the efficiency of a modulation format as the ratio or in dB . (a) Two obvious choices would be to use either 16-PSK or 16-QAM. Based on your results from
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/21/2012 for the course ECEN 661 taught by Professor Miller during the Spring '11 term at Texas A&M.

Ask a homework question - tutors are online