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Analysis of Efficient square root algorithm for V-blast MIMO Wireless Communications
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hariprasad, S. A. |
| Copyright Year | 2012 |
| Abstract | Vertical Bell Laboratories Layered Space time (V-BLAST) detection schemes are widely used in time critical application involving high speed packet transfer using MIMO for 3GPP and 3GPP-2 standards. As the number of transmitting and receiving antennas is increased, conventional detection schemes are computationally expensive due to the incorporation of matrix inversion and squaring operations. Reduction in the computational cost is achieved by the efficient square root algorithm which utilizes orthogonal and unitary transformation to avoid matrix inversion and squaring operation .This paper compares the performance between the conventional detection and the efficient square root algorithm when subjected to multi-media application for various numbers of transmitting and receiving antennas with varying SNR. Performance parameters considered include bit error rate (BER), symbol error rate (SER), peak signal-to-noise ratio (PSNR), number of number of floating point operations (FLOPS), Time required for detection. In an attempt to reduce computational complexity the number of FLOPS required for efficient square root detection with MMSE employing 16 transmitting and 16 receiving antennas is 4.8x106 , a reduction of 1x106 FLOPS and 1.4x106 FLOPS is achieved compared to conventional detection scheme employing minimum mean square error (MMSE) and zero-forcing (ZF) respectively, while sustaining the performance of the conventional detection algorithm. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.ijera.com/papers/Vol2_issue4/NC2421532161.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
