Interference alignment in TDD-cognitive network

Author

An Yong-li ; Xiao Yang ; Liu Shuai-qi ; Qu Guang-zhi

Author_Institution

Inst. of Inf. Sci., Beijing Jiaotong Univ., Beijing, China

Volume

2

fYear

2012

Firstpage

1329

Lastpage

1332

Abstract

Interference alignment is a new technology which is used to solve the problem of sending and receiving multi-information flows simultaneously in wireless interference networks. It can be applied to a variety of wireless interference networks. In the X-type cognitive interference network, we propose cognitive sending and cognitive receiving interference alignment algorithm respectively. This algorithm can achieve the upper limit of DoF (degrees of freedom). In this paper, we also present the basic idea of interference alignment technology and the conditions for implementing it in TDD cognitive interference network. Finally, our simulation results show the effectiveness of the proposed algorithm.

Keywords

cognitive radio; radio networks; radiofrequency interference; TDD-cognitive interference network; X-type cognitive interference network; cognitive receiving interference alignment algorithm; cognitive sending interference alignment algorithm; multiinformation flow receiving problem; multiinformation flow sending problem; wireless communication networks; wireless interference networks; Cognitive Networks; Interference Alignment; Interference Networks; TDD; degrees of freedom (DoF);

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing (ICSP), 2012 IEEE 11th International Conference on

ISSN

2164-5221

Print_ISBN

978-1-4673-2196-9

Type

conf

DOI

10.1109/ICoSP.2012.6491821

Filename

6491821