Theoretical estimates of HVAC duct channel capacity for high-speed Internet access

Author

Xhafa, Ariton E. ; Tonguz, Ozan K. ; Cepni, Ahmet G. ; Stancil, Daniel D. ; Nikitin, Pavel V. ; Brodtkorb, Dagfin

Author_Institution

Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA

Volume

2

fYear

2002

fDate

2002

Firstpage

936

Abstract

We report theoretical channel capacity estimates of heating, ventilation, and air-conditioning (HVAC) ducts based on multi-carrier transmission that uses M-QAM modulation and measured channel responses at 2.4 GHz Industrial, Scientific, and Medical (ISM) band. It is shown that, data rates in excess of 1 Gbps are possible over distances up to 500 m in "matched" ducts (one can think of "matched" ducts as user-friendly ducts, since "matching" can, in principle, eliminate all the multipath reflections in HVAC ducts). Our work also shows that data rates in excess of 300 Mbps are possible over distances up to 500 m even in the presence of significant multipath reflections.

Keywords

HVAC; Internet; UHF radio propagation; channel capacity; electric conduits; electromagnetic wave reflection; indoor radio; multipath channels; quadrature amplitude modulation; 2.4 GHz; HVAC duct channel capacity; ISM band; channel capacity estimates; data rates; heating ventilation air-conditioning ducts; high-speed Internet access; indoor propagation; industrial scientific medical band; matched ducts; measured channel response; multi-carrier transmission; multipath reflections; uses M-QAM; Channel capacity; Coaxial cables; Ducts; Estimation theory; Heating; Internet; Reflection; Transmitters; Transmitting antennas; Ventilation;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2002. ICC 2002. IEEE International Conference on

Print_ISBN

0-7803-7400-2

Type

conf

DOI

10.1109/ICC.2002.996993

Filename

996993