Title :
Comparison between different decoder algorithms for quasi orthogonal space time codes
Author :
Hamdan, Eman ; Alim, Onsy Abdel ; Korany, Noha
Author_Institution :
Electrical Engineering Department, Faculty of Engineering, Alex. university, Alexandria, Egypt
Abstract :
In this paper, a quasi-orthogonal space time block coding (QO-STBC) scheme with maximum likelihood (ML) decoding via simple linear detection is compared to QOSTBC conventional ML decoder and QOSTBC with simplified zero forcing decoder. A conventional QOSTBC scheme can achieve the full rate, but at the cost of decoding complexity and diversity gain. These disadvantages of the conventional QO-STBC scheme are mainly a result of interference terms in the detection matrix. In this paper, the suggested QOSTBC scheme which eliminates interference terms is used to obtain linear detection. The proposed method achieves a great reduction in decoding complexity with respect to the conventional QO-STBC scheme, also a simplified zero forcing algorithms is compared to the suggested linear detection scheme.
Keywords :
interference suppression; matrix algebra; maximum likelihood decoding; orthogonal codes; space-time block codes; ML decoder; QO-STBC scheme; decoding complexity; detection matrix; diversity gain; interference terms elimination; linear detection scheme; maximum likelihood decoding; quasi-orthogonal space time block coding scheme; simplified zero forcing algorithms; Block codes; Complexity theory; Interference; Maximum likelihood decoding; Quality of service; Receivers; ML decoder; linear decoding; space time block code; transmit diversity; zero forcing decoding;
Conference_Titel :
Engineering and Technology (ICET), 2012 International Conference on
Conference_Location :
Cairo
Print_ISBN :
978-1-4673-4808-9
DOI :
10.1109/ICEngTechnol.2012.6396149
