AUTHORS: Bohuslavek Zdenek, Masik Ilja

Download as PDF

ABSTRACT: Currently, the unlicensed ISM band (Industrial Scientific and Medical) 2.4 GHz is become saturated due many standards used at once. In agricultural production has ZigBee a lot of applications, from wireless sensors networks to complicated automation applications. This paper deals with improving the coexistence properties ZigBee (IEEE 802.15.4), while keeping compatibility with the basic standard. This paper describes principles and application of forward error correction above the physical layer, consisting of block data interleaver and Hamming code, and also the effect of improvements in coexistence with variously loaded WiFi 802.11g.

KEYWORDS: dependability, Hamming, wireless, ZigBee

REFERENCES:

[1] Institute of Electrical and Electronics Engineers, Inc., 2000) Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Higher- Speed Physical Layer Extension in the 2.4 GHz Band. New York: Institute of Electrical and Electronics Engineers, Inc.: 89.

[2] Gislason D., 2008. Zigbee Wireless Networking. Oxford, Newnes: 425.

[3] Institute of Electrical and Electronics Engineers, Inc., 2006. Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low-Rate Wireless Personal Area Network (WPANs). New York: Institute of Electrical and Electronics Engineers, Inc.: 305.

[4] Krivanek, V., 2008. Systémy realizace protichybového kódování (Systems design of correction coding).

[Ph.D. Thesis.] Brno, Brno University of technology: 1-93.

[5] Hamming R. W., 1950. Error detecting and error correcting codes. The Bell System Technical Journal. 29: 147-160.