TY - GEN

T1 - A comparison of two lattice-reduction-based receivers for MIMO systems

AU - Niu, Jun

AU - Lu, I. Tai

PY - 2008

Y1 - 2008

N2 - In this paper, we compare a new practical lattice reduction method, Seysen's algorithm, with the existing LLL lattice reduction approach. Seysen's algorithm considers all vectors in the lattice simultaneously and performs global search for lattice reduction, while the LLL algorithm concentrates on local optimization to produce a reduced lattice We also study their performance, when combined with linear detectors (Zero Forcing, MMSE and extended MMSE), and successive interference cancellation (SIC) detector. For MIMO digital communications, Seysen-based linear detectors achieve the same diversity order as the optimum ML detector. It outperforms the existing LLL-based linear detectors. Moreover, Seysen requires less computational time than the LLL scheme. However, this gap disappears in SIC scenario: Seysen-based SIC detector functions the same as LLL-based one, due to the efficiency of SIC itself.

AB - In this paper, we compare a new practical lattice reduction method, Seysen's algorithm, with the existing LLL lattice reduction approach. Seysen's algorithm considers all vectors in the lattice simultaneously and performs global search for lattice reduction, while the LLL algorithm concentrates on local optimization to produce a reduced lattice We also study their performance, when combined with linear detectors (Zero Forcing, MMSE and extended MMSE), and successive interference cancellation (SIC) detector. For MIMO digital communications, Seysen-based linear detectors achieve the same diversity order as the optimum ML detector. It outperforms the existing LLL-based linear detectors. Moreover, Seysen requires less computational time than the LLL scheme. However, this gap disappears in SIC scenario: Seysen-based SIC detector functions the same as LLL-based one, due to the efficiency of SIC itself.

KW - Lattice reduction

KW - MIMO

KW - SIC

KW - Zero forcing and MMSE detection

UR - http://www.scopus.com/inward/record.url?scp=49049119138&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=49049119138&partnerID=8YFLogxK

U2 - 10.1109/SARNOF.2008.4520093

DO - 10.1109/SARNOF.2008.4520093

M3 - Conference contribution

AN - SCOPUS:49049119138

SN - 1424418437

SN - 9781424418435

T3 - Proceedings of the 2008 IEEE Sarnoff Symposium, SARNOFF

BT - Proceedings of the 2008 IEEE Sarnoff Symposium, SARNOFF

T2 - 2008 IEEE Sarnoff Symposium, SARNOFF

Y2 - 28 April 2008 through 30 April 2008

ER -