Collision recovery for OFDM system over wireless channel

Yafei Hou, Masanori Hamamura

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

We present an effective method of collision recovery for orthogonal frequency division multiplexing (OFDM)-based communications. For the OFDM system, the modulated message data can be demodulated using the partial time-domain OFDM signal. Therefore, the partial time-domain signal can be adopted to reconstruct the whole OFDM timedomain signal with estimated channel information. This property can be utilized to recover packets from the collisions. Since most collisions are cases in which a long packet collides with a short packet, the collided part is assumed to be short. The simulated results show that the method can recover the two collided packets with a certain probability and can be developed to solve the problem of hidden terminals. This method will dramatically benefit the protocol design of wireless networks, including ad hoc and sensor networks.

Original languageEnglish
Pages (from-to)1312-1322
Number of pages11
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
VolumeE90-A
Issue number7
DOIs
Publication statusPublished - Jul 2007
Externally publishedYes

Keywords

  • Ad hoc networks
  • Capture effect
  • Collision recovery
  • Hidden terminals
  • Multipacket reception
  • OFDM

ASJC Scopus subject areas

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering
  • Applied Mathematics

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