80211b Receiver

Introduction

WLAN_80211b_Rx_prj project for IEEE 802.11b receiver test and verification design examples are described in this chapter.

• WLAN_80211b_RxMinInput_Sensitivity.dsn minimum receiver sensitivity measurement.
• WLAN_80211b_RxMaxInput_Sensitivity.dsn minimum receiver sensitivity measurement.

Specification Requirements

Receiver performance requirements are:

• Data rate: 11 Mbps
• Modulation type: CCK
• PSDU length: 1024 octets
• Minimum sensitivity: -76 dBm
• Maximum sensitivity -10 dBm

Receiver Minimum Input Level Sensitivity Measurement

WLAN_80211b_RxMinInput_Sensitivity.dsn

Features

• Data rate is 11 Mbps
• CCK modulation
• PSDU Length is 1024 octets
• NF is 10 dB

Description

This design is an example of WLAN 802.11b receiver minimum input level sensitivity measurement. According to [1] 18.4.8.1, the packet error rate (PER) must be less than 8% at a PSDU length of 1024 octets for an input level of -76dBm measured at the antenna. This PER must be specified for 11 Mbps CCK modulation.

The schematic for this design is shown in the following figure. Parameters that can be changed by users are contained in Signal_Generation_VARs, RF_Channel_VARs, and Measurement_VARs.

WLAN_80211b_RxMinInput_Sensitivity Schematic

Simulation Results

Simulation results displayed in WLAN_80211b_RxMinInput_Sensitivity.dds are shown in the following figure. BER and PER at given input levels are simulated.

WLAN_80211b_RxMinInput_Sensitivity.dds

Benchmark

• Hardware platform: Pentium IV 1.8GHz, 512 MB memory
• Software platform: Windows 2000, ADS 2002c
• Simulation time: approximately 85 minutes

References

1. IEEE Standard 802.11b-1999, "Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: High-speed Physical Layer Extension in the 2.4 GHz Band," 1999.

Receiver Maximum Input Level Sensitivity Measurement

WLAN_80211b_RxMaxInput_Sensitivity.dsn

Features

• Data rate is 11 Mbps
• CCK modulation
• PSDU Length is 1024 octets
• NF is 10 dB

Description

This design is an example of WLAN 802.11b receiver minimum input level sensitivity measurement. According to [1] 18.4.8.1, the packet error rate (PER) must be less than 8% at a PSDU length of 1024 octets for a maximum input level of -10dBm measured at the antenna. This PER shall be specified for 11 Mbps CCK modulation. The schematic for this design is shown in the following figure. Parameters that can be changed by users are contained in Signal_Generation_VARs, RF_Channel_VARs, and Measurement_VARs.

WLAN_80211b_RxMaxInput_Sensitivity Schematic

Simulation Results

Simulation results displayed in WLAN_80211b_RxMaxInput_Sensitivity.dds are shown in the following figure. BER and PER at given input levels are simulated.

WLAN_80211b_RxMaxInput_Sensitivity.dds

Benchmark

• Hardware platform: Pentium IV 1.8GHz, 512 MB memory
• Software platform: Windows 2000, ADS 2002C
• Simulation time: approximately 95 minutes

References

1. IEEE Standard 802.11b-1999, "Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: High-speed Physical Layer Extension in the 2.4 GHz Band," 1999.