Topology-Aware Space-Time Network Coding in Cellular Networks
(2018) IEEE Access — Vol. 6, n° 1, p. 7565-7578 (2018)
Files
IEEE_ACCESS_Vandendorpe_rodolfo_2018_2.pdf
Open Access - Adobe PDF
- 8.28 MB
Details
- Authors
Torrea-Duran, Rodolfo 
- Abstract
- Space-time network coding (STNC) is a time-division multiple access (TDMA)-based scheme that combines network coding and space-time coding by allowing relay nodes to combine the information received from different source nodes during the transmission phase and to forward the combined signal to a destination node in the relaying phase. However, STNC schemes require all the relay nodes to overhear the signals transmitted from all the source nodes in the network. They also require a large number of timeslots to achieve full diversity in a multipoint-to-multipoint transmission. Both conditions are particularly challenging for large cellular networks where, assuming a downlink transmission, base stations (BSs) and users only overhear a subset of all the BSs. In this paper, we exploit basic knowledge of the network topology in order to reduce the number of time-slots by allowing simultaneous transmissions from those BSs that do not overhear each other. Our results show that these topology-aware schemes are able to increase the spectral efficiency per time-slot and bit error rate with unequal transmit power and channel conditions.
- Affiliations
Citations
Torrea-Duran, R., Morales Cespedes, M., Plata-Chaves, J., Vandendorpe, L., & Moonen, M. (2018). Topology-Aware Space-Time Network Coding in Cellular Networks. IEEE Access, 6(1), 7565-7578. https://doi.org/10.1109/access.2017.2773709 (Original work published 2018)