Realizing Lattice-Reduction-Based Detectors for High-Rate Wireless Communications
Xiaoli Ma · 2012
Abstract : To support the constantly increasing performance and reliability expectations for tactical communications, wireless systems must cope with the formidable challenges that stem from wireless fading and multipath effects, interference, finite-precision signal processing, high signal dimension, and limited device size, to name a few. The goal of this proposal is to design low-cost wireless devices that can communicate effectively at high data rates. During the 9-month period of this grant, we have developed novel lattice-reduction aided detectors by further reducing the power consumption and improving the performance for high-dimensional and high-rate systems. Specifically, our innovative approaches include (i) investigating efficient hardware realization methodologies for performing soft-output LR with joint detecting and decoding, (ii) designing novel LR-aided equalizers which reduce the complexity for systems with large antenna arrays or high dimensional sizes (e.g, systems with long delays), and (iii) developing a hardware realization of LR algorithm with early terminating.