1 Introduction
2 System Model
2.1 Network and Channel Model
Rate (Mbps) | SINRth (dB) |
---|---|
54 | 24.56 |
48 | 24.05 |
36 | 18.80 |
24 | 17.04 |
18 | 10.79 |
12 | 9.03 |
9 | 7.78 |
6 | 6.02 |
2.2 Overview of the IEEE 802.11 MAC Protocol [23]
3 Power Control Strategy for the Capture Effect
3.1 Differential Reception-Power Power Control (DRP-PC) Scheme
3.2 Performance Comparison
Transmission rate | 24Mbps |
SINRth | 17.04 dB |
ACK length | 112 bits |
Payload length | 250 bytes |
DIFS | 34 µs |
SIFS | 16 µs |
Slot time | 9 µs |
CWmin | 16 |
CWmax | 1024 |
Propagation model | Two-ray ground |
Path loss exponent (\(\upgamma\)) | 4 |
Reference distance (d0) | 1 m |
Constant parameter (K) [21] | − 31.54 dB |
Thermal noise [24] | − 90 dBm |
R1/R2 | 100/70.71 m |
4 Fairness Schemes for the Capture Effect
4.1 Fairness Scheme 1: CW-Size Adjustment
4.2 Fairness Scheme 2: PMF Modification
5 Performance Evaluation
Transmission rate for signaling (basic rate) | 6 Mbps |
SINRth for signaling | 6.02 dB |
RTS length | 160 bits |
CTS length | 112 bits |
ACK length | 112 bits |
Transmission rate for payload | 24 Mbps |
SINRth for payload | 17.04 dB |
Payload of short data-packet | 250 bytes |
Payload of long data-packet | 2000 bytes |
DIFS | 34 µs |
SIFS | 16 µs |
Slot time | 9 µs |
CWmin | 16 |
CWmax | 1024 |
Propagation model | Two-ray ground |
Path loss exponent (\(\upgamma\)) | 4 |
Reference distance (d0) | 1 m |
Constant parameter (K) [21] | − 31.54 dB |
Thermal noise [24] | − 90 dBm |