Title :
On the throughput region of single and two-way multi-hop fading networks with relay piggybacking
Author :
Iannello, Fabio ; Simeone, Osvaldo
Author_Institution :
Center for Wireless Commun. & Signal Process. Res., New Jersey Inst. of Technol., Newark, NJ, USA
Abstract :
One and two-way communication strategies are studied in a two-hop model in which the intermediate node (relay) piggybacks data packets intended for the end-users. Assuming quasi-static fading channels, memoryless processing at all the nodes and no latency constraints, the region of simultaneously achievable throughputs for the two end-users and the relay, measured in reliably transmitted bits per second per Hz, is investigated. For both one-way and two-way transmission, outer and inner bounds to the throughput region are derived. The considered achievable strategies involve type-I HARQ, decode-and-forward and joint or superposition encoding at the relay. The trade-off between the user and relay throughputs is analyzed and studied via numerical simulations, yielding insight into optimal design choices.
Keywords :
encoding; fading channels; packet radio networks; HARQ; data packets; decode-and-forward; multihop fading networks; relay piggybacking; superposition encoding; two-way communication; Fading; Relays; Spread spectrum communication; Throughput;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2009. SPAWC '09. IEEE 10th Workshop on
Conference_Location :
Perugia
Print_ISBN :
978-1-4244-3695-8
Electronic_ISBN :
978-1-4244-3696-5
DOI :
10.1109/SPAWC.2009.5161832
