TY - GEN
T1 - A low-cost non-coherent transmission for uncoded two-way relay channels
AU - Krikidis, Ioannis
AU - Ding, Zhiguo
AU - Charalambous, Charalambos D.
PY - 2011
Y1 - 2011
N2 - In this paper, we investigate a two-phase two-way relay protocol for a scenario without channel coding or channel estimation. The considered configuration represents practical sensor networks, where the nodes wish to exchange some low rate messages (e.g. 1 bit) via a shared relay under a strict complexity or latency constraint (corresponding to our assumptions of no-coding and no-channel estimation). A new scheme which incorporates a single-threshold non-coherent energy detection and a digital network coding process at the relay node is proposed. The energy detection is optimized for both phases of the protocol and a threshold that exhibits no error floors is derived in a closed form. Numerical results validate the efficiency of the proposed scheme and introduce the two-way relay channel as an efficient structure also for non-coherent and uncoded systems.
AB - In this paper, we investigate a two-phase two-way relay protocol for a scenario without channel coding or channel estimation. The considered configuration represents practical sensor networks, where the nodes wish to exchange some low rate messages (e.g. 1 bit) via a shared relay under a strict complexity or latency constraint (corresponding to our assumptions of no-coding and no-channel estimation). A new scheme which incorporates a single-threshold non-coherent energy detection and a digital network coding process at the relay node is proposed. The energy detection is optimized for both phases of the protocol and a threshold that exhibits no error floors is derived in a closed form. Numerical results validate the efficiency of the proposed scheme and introduce the two-way relay channel as an efficient structure also for non-coherent and uncoded systems.
KW - Cooperative networks
KW - non-coherent detection
KW - two-way relay channel
KW - uncoded
UR - http://www.scopus.com/inward/record.url?scp=84858405242&partnerID=8YFLogxK
U2 - 10.1109/GLOCOMW.2011.6162431
DO - 10.1109/GLOCOMW.2011.6162431
M3 - Conference contribution
AN - SCOPUS:84858405242
SN - 9781467300407
T3 - 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011
SP - 178
EP - 182
BT - 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011
T2 - 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011
Y2 - 5 December 2011 through 9 December 2011
ER -