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This paper proposes an MMSE detector using forward and backward reciprocal lattice reduction (LR) in MIMO systems. In the 8×8 MIMO systems, the reciprocal LR aided detection (LRAD) achieves better BER performances about 3dB than the LRAD using the conventional LLL algorithm over BER=10-5. The proposed method furthermore achieves better BER performances about 1dB than the reciprocal LRAD.
This paper proposes a lattice-reduction aided detection (LRAD) based successive interference cancellation (SIC). The proposed detector achieves as good as or better BER performances than the conventional LR aided MMSE detector and using the SIC for QPSK, 16QAM and 64QAM in the 8×8 MIMO systems. It also achieves BER curves to be as steep as or steeper than those using the maximum likelihood detector.
Lattice reduction is an effective technique for improving the performance of MIMO data detection. In this paper, we analyze lattice reduction processing on the basis lattice and the dual lattice for MIMO detection and investigate the parameters which affect the complexity of the LLL algorithm. Through use of the dual lattice in the LLL algorithm, the BER performances are improved about 2.2dB at BER=10...
This paper proposes an improved lattice-reduction aided (LRA) MMSE detection with successive interference cancellation (SIC) using both the forward and the backward (F&B) reduction LLL algorithms. We also apply a simple list detection to the F&B-LRA MMSE with SIC. The proposed detector provides good BER performance relatively close to that with the ML detection for both QPSK and 16QAM in the...
This paper proposes a novel lattice-reduction aided (LRA) detection in MIMO systems by improving the LRA-MMSE detection. The proposed detection scheme makes five transform matrices by iteratively reducing the columns of the channel matrix. Using the five transform matrices, five estimates of the transmitted signal are created, among which the most reliable estimate is chosen. The transmit signal energy...
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