Interference alignment over asynchronous X networks
- Resource Type
- Conference
- Authors
- Najafi, Hossein; Torbatian, Mehdi; Damen, Mohamed Oussama
- Source
- 2011 IEEE International Symposium on Information Theory Proceedings Information Theory Proceedings (ISIT), 2011 IEEE International Symposium on. :2582-2586 Jul, 2011
- Subject
- Communication, Networking and Broadcast Technologies
Computing and Processing
Components, Circuits, Devices and Systems
Receivers
Interference
Transmitters
Delay
Upper bound
Discrete Fourier transforms
Antennas
- Language
- ISSN
- 2157-8095
2157-8117
A symbol-asynchronous X network with time-invariant channel coefficients and single antenna nodes is considered. By employing the asynchronism in the design of the interference alignment, we achieve the upper bound for the total number of degrees of freedom of this network which is argued to be the same as that of the synchronous case. The asynchronism, which exists among the received signals at each receiver, results in inter-symbol-interference (ISI) among the transmitted symbols from different transmitters. This can provide the channel variation required for the vector alignment over the constant network with single antenna nodes.