Diversity Analysis of MIMO-STBC using various Coding and Receiving Techniques

Vikas Gupta; Jyoti Pipariya

In this paper, we present a low-complexity algorithm for detection in high rate, space-time block coded (STBC) large MIMO systems that achieve high spectral efficiencies. STBC is a powerful technique to achieve full spatial diversity in Rayleigh fading channels with low decoding complexities. This complexity gain becomes greater when the number of transmit antennas or the constellation size becomes larger. STBC is a MIMO transmit strategy which exploits transmit diversity and high reliability. In most of the existing space-time code designs, achieving full diversity is based on maximum-likelihood (ML) decoding at the receiver that is usually computationally expensive. Sphere detection has emerged as a powerful means of finding the maximum likelihood solutions to the detection problem of multiple antenna (MIMO) systems. In this paper, we analyze the performance and computational complexity of sphere detector and compare it with that of already known MIMO receiver techniques.

Select Volume / Issues:

• Volume 3 Issue 5, Sept. 2012

Year:

2012

Type of Publication:

Article

Keywords:

Alamouti STBC; full diversity; maximum likelihood ML detector; multiple-input multiple-output MIMO; sphere decoder

Journal:

IJECCE

Volume:

3

Number:

5

Pages:

1279-1282

Month:

Sept.