X hits on this document

PDF document

DigitalCommons@University of Nebraska - Lincoln - page 40 / 69

195 views

0 shares

0 downloads

0 comments

40 / 69

31

Chapter 5 Worst-Case Jamming in SESS

5.1 Introduction

SESS has been shown to achieve same performance as DSSS in AWGN and Rayleigh

fading channels. This chapter sets out to show through mathematical analysis and simulation

that SESS remains the same as DSSS in worst-case jamming.

5.2 Analysis

As stated in Chapter 3.3 in Equation (8), the probability for error in a SESS system can

be expressed as: |

=

1

2

2

. Where refers to the number of errors in the

receiver code, and N is the chip length. In order to find the worst case jamming, this probability

for error must be used, in a similar fashion to DSSS, to the PNJ model. Equation 8 shows the

probability of error of SESS in the pulse noise jamming model.

(13)

  • |= 1 −  

1

2

2

  • +

    

1

2

2

+ /

In the DSSS model, the assumption was made that the probability of error is dominated

by the jamming. By making the same assumptions in the SESS model, the (1 – ρ) Q-function

Document info
Document views195
Page views195
Page last viewedSat Dec 10 13:03:08 UTC 2016
Pages69
Paragraphs1770
Words13793

Comments