Throughput analysis of the IEEE 802.11 distributed coordination function considering erroneous channel and capture effects

Abstract

This paper presents a performance study of the distributed coordination function (DCF) of 802.11 networks considering erroneous channel and capture effects under non-saturated traffic conditions employing a basic access method. The aggregate throughput of a practical wireless local area network (WLAN) strongly depends on the channel conditions. In a real radio environment, the received signal power at the access point from a station is subjected to deterministic path loss, shadowing, and fast multipath fading. The binary exponential backoff (BEB) mechanism of IEEE 802.11 DCF severely suffers from more channel idle time under high bit error rate (BER). To alleviate the low performance of IEEE 802.11 DCF, a new mechanism is introduced, which greatly outperforms the existing methods under a high BER. A multidimensional Markov chain model is used to characterize the behavior of DCF in order to account both non-ideal channel conditions and capture effects.

A Joint Strategy for Fair and Efficient Energy Usage in WLANs in the Presence of Capture Effect

“…For example, in [6], authors performed experiments and showed that there exists capture effect on wireless interfaces. Moreover in [12][13][14], authors proposed models for the performance analysis of IEEE 802.11 WLAN in the presence of capture effect.…”

Development and Verification of Simulation Model Based on Real MANET Experiments for Transport Layer Protocols (UDP and TCP)

“…Some 9 to 37 nodes are used within four mobility groups indoor on AODV and OLSR protocols, and it is found that the approach of choreographing node movement is suitable for real-life MANET testing [19] . An investigation has been carried out on the throughput of the IEEE 802.11 distributed coordination function considering a number of factors, e.g., path loss, multi-path fading [20] . Wu et al [21] analysed the reliability of multihop wireless networks which can suffer from node failure and random channel fading [22] .…”

A Power Control Scheme to Exploit Capture Effect with Fairness Consideration in WLAN

“…If all the STAs in a basic service set (BSS) of the IEEE 802.11 WLAN transmit the packets with constant power (i.e., without power control), then the packet-reception at the AP will naturally hold the capture capability due to the spatial difference among STAs. Some studies have examined the impact of the capture effect on IEEE 802.11 WLANs [12][13][14][15][16]. In [12], the authors presented an analytical model based on Markov chain to demonstrate the probability of successful transmission is increased under capture effect and channel fading.…”

“…Some researchers conducted a saturation throughput analysis of the IEEE 802.11 DCF under the capture effect [15]. Taking into account the erroneous channel and capture effect, Kumar and Krishnan [16] analyzed the performance of non-saturated traffic in IEEE 802.11 networks.…”