Iterative Multi-Branch Lattice Reduction-Aided Successive Interference Cancellation for Multiuser MIMO Systems
نویسندگان
چکیده
In this paper, we propose an iterative detection and decoding (IDD) scheme for the uplink of coded multiuser multiple-input multiple-output (MU-MIMO) systems. The structure of the proposed soft-input soft-output (SISO) iterative (turbo) scheme is based on a multi-branch lattice reduction successive interference cancellation (MB-LR-SIC) strategy that computes in the first iteration a reliable extrinsic information and then feeds it to the decoder. After the first iteration, the soft cancellation minimum mean square error (SC-MMSE) strategy is used to subtract the residual interference. Simulations show that the proposed scheme has an excellent performance as compared to prior art and approach the single user (SU) scenario with only one transmit antenna which is free from interference. Keywords—Multiuser MIMO systems; Iterative detection and decoding receiver; Multi-branch lattice reduction sequence interference cancellation detection.
منابع مشابه
Multi-Branch Lattice-Reduction SIC for Multiuser MIMO Systems
In this paper, we propose a new detection technique for multiuser multiple-input multiple-output (MU-MIMO) systems. The proposed scheme combines a lattice reduction (LR) transformation, which makes the channel matrix nearly orthogonal, and then employs a multi-branch (MB) technique with successive interference cancellation (SIC). A single LR transformation is required for the receive filters of...
متن کاملApproximate maximum a posteriori detection for multiple-input-multiple-output systems with bit-level lattice reduction-aided detectors and successive interference cancellation
For iterative detection and decoding (IDD) in multiple-input–multiple-output (MIMO) systems, although the maximum a posteriori (MAP) detector can achieve an optimal performance, because of its prohibitively high computational complexity, various low-complexity approximate MAP detectors are studied. Among the existing MIMO detectors for the non-IDD receivers, lattice reduction (LR)-aided detecto...
متن کاملMulti-Feedback Successive Interference Cancellation for Multiuser MIMO Systems
In this paper, a low-complexity multiple feedback successive interference cancellation (MF-SIC) strategy is proposed for the uplink of multiuser multiple-input multiple-output (MU-MIMO) systems. In the proposed MF-SIC algorithm with shadow area constraints (SAC), an enhanced interference cancellation is achieved by introducing constellation points as the candidates to combat the error propagati...
متن کاملA Lattice Reduction-aided Information Precoder for Multiuser Communication System
Recent demand for high rate of information transmission in wireless communication has resulted in multiple-input/multiple output (MIMO) systems which offer high spectral efficiency. Though massive Multi-user MIMO (MU-MIMO) system introduces interference, it produces a considerable increase in capacity by the use of large number of transmit and receive antennas to communicate with multiple users...
متن کاملAdaptive Iterative Decision Feedback Detection Algorithms for Multi-User MIMO Systems
An adaptive iterative decision multi-feedback detection algorithm with constellation constraints is proposed for multiuser multiantenna systems. An enhanced detection and interference cancellation is performed by introducing multiple constellation points as decision candidates. A complexity reduction strategy is developed to avoid redundant processing with reliable decisions along with an adapt...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2015