The differential transmitter and receiver for cognitive MIMO systems

Author

Jing Liu ; Shaohai Hu ; Yang Xiao ; Xiaoli Liu ; Moon Ho Lee ; Kiseon Kim

Author_Institution

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

fYear

2010

fDate

26-29 Sept. 2010

Firstpage

122

Lastpage

125

Abstract

In this paper, a cognitive MIMO system with differential space-time coding is proposed, in which the cognitive link communicates using two transmission antennas and one receiving antenna. Cognitive MIMO systems allow the licensed spectrum to be opportunistically exploited by the cognitive user, so they enable public access to the underutilized spectral bands and therefore the overall spectral efficiency can be economically increased. While in some situations, such as high-mobility environment or channel fading rapidly, it may be difficult and costly to estimate the channel accurately for cognitive MIMO systems. To solve the problem, differential spacetime coding scheme has been proposed for cognitive MIMO systems. The construction of the differential transmitter and receiver for the cognitive MIMO system is provided.

Keywords

MIMO communication; cognitive radio; radio links; radio receivers; radio spectrum management; radio transmitters; receiving antennas; space-time codes; transmitting antennas; cognitive MIMO system; cognitive link; differential receiver; differential space-time coding; differential transmitter; licensed spectrum; public access; receiving antenna; spectral band; spectral efficiency; transmission antenna; MIMO; cognitive radio; differential space-time coding; receiver; transmitter;

fLanguage

English

Publisher

iet

Conference_Titel

Wireless, Mobile and Multimedia Networks (ICWMNN 2010), IET 3rd International Conference on

Conference_Location

Beijing

Type

conf

DOI

10.1049/cp.2010.0633

Filename

5702971