EE 567辅导、讲解java/c++语言、讲解Reed-Solomon、CS/python编程辅导

EE 567

Project

Due Tuesday, November 27, 2018 at 6:40 p.m.

Work all 2 Parts.

Instructions.

Your project should be typed on one side of the paper only and stapled

in the upper left hand corner. You should include a cover page, an Introduction,

an Analysis section, a Results section, a Summary section and an

Appendix (where you include your Matlab code). Do not place your project

inside any kind of binder. This is to be an individual effort. You may consult

any written material (hard or soft copy) but you may not solicit input from

any person except that you may ask the professor or TA questions regarding

your project. Your project report should be self-contained, that is, the reader

should be able to understand the project and your solutions from your report

without consulting the actual project assignment.

Project Description.

Assume you have been hired to design a communication signaling system.

There are 8 users all transmitting their data to a common receiver. The

users are not coordinated with each other. Each user tries to transit data

to the receiver when the data is available. Each user’s data is composed of

packets. Each packet has a header followed by the encoded data. The header

contains information required by the receiver to make sure the data is processed

properly. The header itself also has an error correction code applied.

You can assume each user will start the transmission of a packet sometime

between 0 and 128 seconds where the start time is uniformly distributed between

0 and L seconds where L is such that L plus the packet time is 128

seconds (this assures that the end of a packet transmission will always occur

on or before the 128 second boundary marker). Each user will only transmit

one packet per 128 second interval.

The header is composed of 16 information bits. An (n, k) binary BCH code

is applied. More information about this code will be supplied in class.

1

The data is composed of one or more codewords. Each group of 8 information

bits is mapped to an 8-bit symbol for Reed-Solomon (RS) coding.

The RS code is an (n, k) code. This code will be discussed in class.

The encoded header combined with the encoded data make up a packet.

Each user’s packet is the same length.

At the receiver if two or more packets collide then all the data in each of

the affected packets is considered lost. Furthermore, if there is one or more

uncorrectable errors in the header then all the data in the corresponding

packet is lost. Also, if any uncorrectable errors occur in the RS codewords

then all the data in that codeword is lost. You can assume that the transmit

time from each user to the receiver is the same. Your task is to design the

packet lengths and coding structure.

You may assume an operating point of E/N0 = 6.5 dB, where E/N0 is

the energy available per bit (coded or uncoded). Each bit time is 1 msec.

Each bit is transmitted using BPSK modulation.

Part 1.

Design the system so that the expected throughput for each user is maximized.

Part 2.

Design the system to maximize the throughput such that each user’s information

in a packet is received and decoded successfully at least 95% of the time.

In the Summary section include the following information:

Part 1:

The BCH header is an (n,k) code (specify n and k).

The RS code is an (n,k) code (specify n and k).

The packet length is x seconds (specify x).

There is/are x RS codewords per packet (specify x).

The expected throughput for each user is x information bps (specify x).

2

Part 2:

The BCH header is an (n,k) code (specify n and k).

The RS code is an (n,k) code (specify n and k).

The packet length is x seconds (specify x).

There is/are x RS codewords per packet (specify x).

The throughput for each user to assure 95% reliability is x information bps

(specify x).