From experience with indoor wireless networks: A link quality metric that captures channel memory

Keshavarzian A., Uysal-Biyikoglu E., Lal D., Chintalapudi K.

IEEE COMMUNICATIONS LETTERS, cilt.11, sa.9, ss.729-731, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 11 Sayı: 9
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1109/lcomm.2007.070683
  • Dergi Adı: IEEE COMMUNICATIONS LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.729-731
  • Anahtar Kelimeler: indoor wireless channel, coherence time, link quality metric, channel memory, link inefficiency
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

With ARQ based link-layer schemes, energy consumption on a link increases with packet retransmissions. We define the inefficiency of a link as the expected number of transmissions before a packet is successfully received on that link. Memory in the packet success process, caused by long indoor coherence times, strongly influences inefficiency. Based on measurements, we build a simple model for the packet success process that incorporates memory and predicts our metric practically and accurately. In particular, inefficiency is asymptotically linear in the memory duration when there is a nonzero probability of a deep fade, and approximately logarithmic otherwise.