ASILOMAR 2014, 48th Asilomar Conference on Signals, Systems, and Computers, November 2-5, 2014, Pacific Grove, CA, USA
Interference management between uncoordinated eNBs and UEs is a crucial aspect of Heterogeneous Networks in LTE, especially if the interference can be exploited at the
receiver. In this paper, a novel preprocessing Block QR decomposition technique is proposed for a low-complexity maxlog- MAP receiver, for interference detection in a 4 × 4 HetNet scenario. The authors show that for various SNR, the proposed receiver detection scheme has minimal mutual information loss for Gaussian signals for the 4 × 4 and 8 × 8 case. The proposed preprocessing method is implemented in an LTE simulation test bench with practical codes and compared with a brute-force search max-log-MAP algorithm.
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