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2009
IEEE

Multi-Frame Distributed Protocol for Analog Network Coding in Slow-Fading Channels

9 years 11 months ago
Multi-Frame Distributed Protocol for Analog Network Coding in Slow-Fading Channels
The wireless network scenario here is based on N users that communicate one with the others through a central relay node by adopting the Analog Network Coding (ANC) paradigm. In this paper, we propose a communication scheme for ANC able to guaratee the simultaneous transmissions of N 2 interfering terminals using the concept of multiuser processing (i.e., channel estimation and detection). Under the assumption of slow-varying channels, multi-link channel estimation is achieved through the coherent summation at the physical layer of the invariant training sequences over the different frames, thus enabling multiuser detection. Benefits of the proposed ANC protocol are stressed through comparisons with the traditional TDMAbased routing scheme where the relay is time-shared among the different users. Impacts of the hindrances to our scheme (namely, hardware impairments at the nodes and finite coherence-time of the channels) are also investigated by numerical analysis. The proposed algorit...
Jonathan Gambini, Umberto Spagnolini
Added 16 Aug 2010
Updated 16 Aug 2010
Type Conference
Year 2009
Where GLOBECOM
Authors Jonathan Gambini, Umberto Spagnolini
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