ns3::DsssErrorRateModel Class Reference

an implementation of DSSS error rate modelThe 802.11b modulations: More...

#include "dsss-error-rate-model.h"

Static Public Member Functions
static double	DqpskFunction (double x)
	A function DQPSK. More...
static double	GetDsssDbpskSuccessRate (double sinr, uint64_t nbits)
	Return the chunk success rate of the differential BPSK. More...
static double	GetDsssDqpskCck11SuccessRate (double sinr, uint64_t nbits)
	Return the chunk success rate of the differential encoded QPSK for 11Mbps data rate. More...
static double	GetDsssDqpskCck5_5SuccessRate (double sinr, uint64_t nbits)
	Return the chunk success rate of the differential encoded QPSK for 5.5Mbps data rate. More...
static double	GetDsssDqpskSuccessRate (double sinr, uint64_t nbits)
	Return the chunk success rate of the differential encoded QPSK. More...

Static Protected Attributes
static const double	WLAN_SIR_IMPOSSIBLE = 0.1
	WLAN impossible. More...
static const double	WLAN_SIR_PERFECT = 10.0
	WLAN perfect. More...

Detailed Description

an implementation of DSSS error rate model

The 802.11b modulations:

• 1 Mbps mode is based on DBPSK. BER is from equation 5.2-69 from John G. Proakis Digital Communications, 2001 edition
• 2 Mbps model is based on DQPSK. Equation 8 from "Tight bounds and accurate approximations for dqpsk transmission bit error rate", G. Ferrari and G.E. Corazza ELECTRONICS LETTERS, 40(20):1284-1285, September 2004
• 5.5 Mbps and 11 Mbps are based on equations (18) and (17) from "Properties and performance of the ieee 802.11b complementarycode-key signal sets", Michael B. Pursley and Thomas C. Royster. IEEE TRANSACTIONS ON COMMUNICATIONS, 57(2):440-449, February 2009.

This model is designed to run with highest accuracy using the Gnu Scientific Library (GSL), but if GSL is not installed on the platform, will fall back to (slightly less accurate) Matlab-derived models for the CCK modulation types.

More detailed description and validation can be found in http://www.nsnam.org/~pei/80211b.pdf

Definition at line 66 of file dsss-error-rate-model.h.

Member Function Documentation

DqpskFunction()

double ns3::DsssErrorRateModel::DqpskFunction ( double  x )

static

A function DQPSK.

Parameters

x

x

Returns

DQPSK (x)

Definition at line 35 of file dsss-error-rate-model.cc.

References NS_LOG_FUNCTION_NOARGS, and sample-rng-plot::x.

Referenced by GetDsssDqpskSuccessRate().

GetDsssDbpskSuccessRate()

double ns3::DsssErrorRateModel::GetDsssDbpskSuccessRate ( double  sinr, uint64_t  nbits  )

static

Return the chunk success rate of the differential BPSK.

Parameters

sinr	the SINR ratio (not dB) of the chunk
nbits	the size of the chunk

Returns

the chunk success rate of the differential BPSK

Definition at line 43 of file dsss-error-rate-model.cc.

References NS_LOG_FUNCTION_NOARGS.

Referenced by ns3::NistErrorRateModel::GetChunkSuccessRate(), and ns3::YansErrorRateModel::GetChunkSuccessRate().

GetDsssDqpskCck11SuccessRate()

double ns3::DsssErrorRateModel::GetDsssDqpskCck11SuccessRate ( double  sinr, uint64_t  nbits  )

static

Return the chunk success rate of the differential encoded QPSK for 11Mbps data rate.

Parameters

sinr	the SINR ratio (not dB) of the chunk
nbits	the size of the chunk

Returns

the chunk success rate of the differential encoded QPSK for

Definition at line 95 of file dsss-error-rate-model.cc.

References min, NS_LOG_DEBUG, NS_LOG_FUNCTION_NOARGS, NS_LOG_WARN, WLAN_SIR_IMPOSSIBLE, and WLAN_SIR_PERFECT.

Referenced by ns3::NistErrorRateModel::GetChunkSuccessRate(), and ns3::YansErrorRateModel::GetChunkSuccessRate().

GetDsssDqpskCck5_5SuccessRate()

double ns3::DsssErrorRateModel::GetDsssDqpskCck5_5SuccessRate ( double  sinr, uint64_t  nbits  )

static

Return the chunk success rate of the differential encoded QPSK for 5.5Mbps data rate.

Parameters

sinr	the SINR ratio (not dB) of the chunk
nbits	the size of the chunk

Returns

the chunk success rate of the differential encoded QPSK for

Definition at line 61 of file dsss-error-rate-model.cc.

References min, NS_LOG_FUNCTION_NOARGS, NS_LOG_WARN, WLAN_SIR_IMPOSSIBLE, and WLAN_SIR_PERFECT.

Referenced by ns3::NistErrorRateModel::GetChunkSuccessRate(), and ns3::YansErrorRateModel::GetChunkSuccessRate().

GetDsssDqpskSuccessRate()

double ns3::DsssErrorRateModel::GetDsssDqpskSuccessRate ( double  sinr, uint64_t  nbits  )

static

Return the chunk success rate of the differential encoded QPSK.

Parameters

sinr	the SINR ratio (not dB) of the chunk
nbits	the size of the chunk

Returns

the chunk success rate of the differential encoded QPSK.

Definition at line 52 of file dsss-error-rate-model.cc.

References DqpskFunction(), and NS_LOG_FUNCTION_NOARGS.

Referenced by ns3::NistErrorRateModel::GetChunkSuccessRate(), and ns3::YansErrorRateModel::GetChunkSuccessRate().

Member Data Documentation

WLAN_SIR_IMPOSSIBLE

const double ns3::DsssErrorRateModel::WLAN_SIR_IMPOSSIBLE = 0.1

staticprotected

WLAN impossible.

Definition at line 125 of file dsss-error-rate-model.h.

Referenced by GetDsssDqpskCck11SuccessRate(), and GetDsssDqpskCck5_5SuccessRate().

WLAN_SIR_PERFECT

const double ns3::DsssErrorRateModel::WLAN_SIR_PERFECT = 10.0

staticprotected

WLAN perfect.

Definition at line 123 of file dsss-error-rate-model.h.

Referenced by GetDsssDqpskCck11SuccessRate(), and GetDsssDqpskCck5_5SuccessRate().

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The documentation for this class was generated from the following files:

• src/wifi/model/dsss-error-rate-model.h
• src/wifi/model/dsss-error-rate-model.cc