38 .SetGroupName (
"Wifi")
51 return std::log (val) / std::log (2.0);
58 double EbNo = snr * signalSpread / phyRate;
59 double z = std::sqrt (EbNo);
60 double ber = 0.5 * erfc (z);
69 double EbNo = snr * signalSpread / phyRate;
70 double z = std::sqrt ((1.5 *
Log2 (m) * EbNo) / (m - 1.0));
71 double z1 = ((1.0 - 1.0 / std::sqrt (m)) * erfc (z));
72 double z2 = 1 - std::pow ((1 - z1), 2);
73 double ber = z2 /
Log2 (m);
74 NS_LOG_INFO (
"Qam m=" << m <<
" rate=" << phyRate <<
" snr=" << snr <<
" ber=" << ber);
93 double retval =
Factorial (n) / (
Factorial (k) *
Factorial (n - k)) * std::pow (p, static_cast<double> (k)) * std::pow (1 - p, static_cast<double> (n - k));
101 unsigned int dstart = (d + 1) / 2;
102 unsigned int dend = d;
105 for (
unsigned int i = dstart; i < dend; i++)
116 unsigned int dstart = d / 2 + 1;
117 unsigned int dend = d;
120 for (
unsigned int i = dstart; i < dend; i++)
124 pd += 0.5 *
Binomial (d / 2, ber, d);
147 uint32_t signalSpread, uint32_t phyRate,
148 uint32_t dFree, uint32_t adFree)
const
150 NS_LOG_FUNCTION (
this << snr << nbits << signalSpread << phyRate << dFree << adFree);
151 double ber =
GetBpskBer (snr, signalSpread, phyRate);
157 double pmu = adFree * pd;
159 double pms = std::pow (1 - pmu, nbits);
165 uint32_t signalSpread,
167 uint32_t m, uint32_t dFree,
168 uint32_t adFree, uint32_t adFreePlusOne)
const
170 NS_LOG_FUNCTION (
this << snr << nbits << signalSpread << phyRate << m << dFree << adFree << adFreePlusOne);
171 double ber =
GetQamBer (snr, m, signalSpread, phyRate);
178 double pmu = adFree * pd;
181 pmu += adFreePlusOne * pd;
183 double pms = std::pow (1 - pmu, static_cast<double> (nbits));
345 NS_ASSERT (
"undefined DSSS/HR-DSSS datarate");
static TypeId GetTypeId(void)
double CalculatePdEven(double ber, unsigned int d) const
static double GetDsssDqpskCck11SuccessRate(double sinr, uint32_t nbits)
Return the chunk success rate of the differential encoded QPSK for 11Mbps data rate.
double CalculatePd(double ber, unsigned int d) const
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by "...
This class mimics the TXVECTOR which is to be passed to the PHY in order to define the parameters whi...
double GetFecBpskBer(double snr, double nbits, uint32_t signalSpread, uint32_t phyRate, uint32_t dFree, uint32_t adFree) const
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
enum WifiModulationClass GetModulationClass() const
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file...
double CalculatePdOdd(double ber, unsigned int d) const
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
double GetQamBer(double snr, unsigned int m, uint32_t signalSpread, uint32_t phyRate) const
Return BER of QAM-m with the given parameters.
static double GetDsssDqpskSuccessRate(double sinr, uint32_t nbits)
Return the chunk success rate of the differential encoded QPSK.
#define NS_LOG_INFO(msg)
Use NS_LOG to output a message of level LOG_INFO.
represent a single transmission modeA WifiMode is implemented by a single integer which is used to lo...
the interface for Wifi's error models
double GetFecQamBer(double snr, uint32_t nbits, uint32_t signalSpread, uint32_t phyRate, uint32_t m, uint32_t dfree, uint32_t adFree, uint32_t adFreePlusOne) const
uint64_t GetPhyRate(uint32_t channelWidth, bool isShortGuardInterval, uint8_t nss) const
uint16_t GetConstellationSize(void) const
Model the error rate for different modulations.
enum WifiCodeRate GetCodeRate(void) const
uint32_t GetChannelWidth(void) const
virtual double GetChunkSuccessRate(WifiMode mode, WifiTxVector txVector, double snr, uint32_t nbits) const
A pure virtual method that must be implemented in the subclass.
Every class exported by the ns3 library is enclosed in the ns3 namespace.
double Log2(double val) const
Return the logarithm of the given value to base 2.
uint64_t GetDataRate(uint32_t channelWidth, bool isShortGuardInterval, uint8_t nss) const
uint32_t Factorial(uint32_t k) const
Return k!
static double GetDsssDqpskCck5_5SuccessRate(double sinr, uint32_t nbits)
Return the chunk success rate of the differential encoded QPSK for 5.5Mbps data rate.
double GetBpskBer(double snr, uint32_t signalSpread, uint32_t phyRate) const
Return BER of BPSK with the given parameters.
double Binomial(uint32_t k, double p, uint32_t n) const
Return Binomial distribution for a given k, p, and n.
static double GetDsssDbpskSuccessRate(double sinr, uint32_t nbits)
Return the chunk success rate of the differential BPSK.
WifiMode GetMode(void) const
a unique identifier for an interface.
TypeId SetParent(TypeId tid)
Set the parent TypeId.