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Joint channel & polarization assignment for capacity enhancement in non line-of-sight fixed wireless networks

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3 Author(s)
Ntagkounakis, K.E. ; Int. Co-operations R&D, INTRACOM S.A., Peania, Greece ; Dallas, P.I. ; Sharif, B.S.

We consider frequency channel assignment (CA) and antenna polarization assignment (PA) schemes jointly in the scope of non line-of-sight fixed wireless networks. First, we introduce a new, more accurate method to characterize CA and PA schemes. Following this approach, we propose a new rotated-interleaved CA scheme that outperforms existing CA schemes and a new interleaved-interleaved PA methodology that is more efficient than basic strip-by-strip PA when applied on top of most CA schemes for re-use factor FR = 1. An investigation on the total capacity gains of the CA and PA schemes showed that each CA scheme performs differently when combined with different PA schemes and for different re-use factors and only a joint consideration can highlight the best CA-PA combination. In a further step, instead of simply combining CA, PA schemes, we introduce a methodology to design new PA patterns that are optimized (oPA) on the distinct features of each CA scheme. Our results demonstrate that the oPA strategy achieves higher performance than other PA methodologies for FR = 1, 2.

Published in:

Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on  (Volume:4 )

Date of Conference:

5-8 Sept. 2004

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