Loop-Reduction LLL Algorithm and Architecture for Lattice-Reduction-Aided MIMO Detection
We propose a loop-reduction LLL (LR-LLL) algorithm for lattice-reduction-aided (LRA) multi-input multioutput (MIMO) detection. The LLL algorithm is an iterative algorithm that contains many check and process operations; however, the traditional LLL algorithm itself possesses a lot of redundant check...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2012-01-01
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| Series: | Journal of Electrical and Computer Engineering |
| Online Access: | http://dx.doi.org/10.1155/2012/876380 |
| Summary: | We propose a loop-reduction LLL (LR-LLL) algorithm for lattice-reduction-aided (LRA) multi-input multioutput
(MIMO) detection. The LLL algorithm is an iterative algorithm that contains many check and process operations; however, the
traditional LLL algorithm itself possesses a lot of redundant check operations. To solve this problem, we propose a look-ahead
check technique that not only reduces the complexity of the LLL algorithm but also produces the lattice-reduced matrix which
obeys the original LLL criterion. Simulation results show that the proposed LR-LLL algorithm reduces the average number of
loops or computation complexity. Besides, it also shortens the latency of clock cycles about 19.4%, 29.1%, and 46.1% for 4×4, 8×8, and 12×12 MIMO systems, respectively. |
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| ISSN: | 2090-0147 2090-0155 |