Title :
Component-interleaved Alamouti coding with rotated constellations for signal space diversity
Author :
Sungho Jeon ; Jaekwon Lee ; Ilsoo Kyung ; Man-Sik Kim
Author_Institution :
Broadcast Tech. Res. Inst., Korean Broadcasting Syst. (KBS), Seoul, South Korea
Abstract :
A signal space diversity (SSD) scheme combined with Alamouti coding is investigated to achieve more diversity gain in fading channels. By approximating noise as a Gaussian distribution after Alamouti decoding, an exact expression for the SER for SSD schemes with Alamouti coding in Rayleigh fading channels can be derived for 4-QAM and 16-QAM. Using the formula derived by using upper bound approach, it can be confirmed that the diversity order is 4MR, where 2 stems from SSD and 2MR from Alamouti coding with receive MRC. Numerical evaluation performed using the formula developed for evaluating performance under various conditions indicated that the rotation angle affects the performance; this numerical evaluation had low computational complexity.
Keywords :
Gaussian distribution; Rayleigh channels; communication complexity; decoding; diversity reception; encoding; error statistics; noise; quadrature amplitude modulation; 16-QAM; 4-QAM; Alamouti decoding; Gaussian distribution; Rayleigh fading channels; component-interleaved Alamouti coding; computational complexity; diversity gain; noise approximation; rotated constellations; signal space diversity scheme; symbol error rate; upper bound approach; Computational complexity; Constellation diagram; Decoding; Diversity methods; Fading; Gaussian distribution; Gaussian noise; Performance evaluation; Quadrature phase shift keying; Upper bound;
Conference_Titel :
Broadband Multimedia Systems and Broadcasting (BMSB), 2010 IEEE International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-4461-8
Electronic_ISBN :
978-1-4244-4462-5
DOI :
10.1109/ISBMSB.2010.5463128
