Linear and Nonlinear Time Domain Block Equalizers on MIMO Frequency Selective Channels

• 作者: Cong Li Yasunori Iwanami
• 来源期刊: 通讯、网络与系统学国际期刊(英文)
• 学科: 工学
• 关键词: MIMO Frequency Selective Fading Channel ISI IAI Time Domain BLOCK EQUALIZER BLE BNLE
• 年，卷（期）: 2013,（3）
• 页码范围: 119-127
• 页数: 9页
• 分类号: TN91

摘要

Single-Carrier (SC) transmission with the same bandwidth as Multi-Carrier (MC) transmission (such as OFDM) may have far shorter symbol duration and is considered to be more robust against time selective fading. In this paper, we proposed the novel equalization and signal separation schemes in time domain for short block length transmission, i.e., Block Linear Equalization (BLE) and Block Nonlinear Equalization (BNLE) on MIMO frequency selective fading channels. The proposed BLE uses the MMSE based inverse matrix in time domain and the BNLE utilizes the QRD-M (QR Decomposition with M algorithm) with appropriate receiver complexity. We compared the computational complexity among the conventional SC-FDE (Frequency Domain Equalization) scheme and the proposed equalizers. We also used the Low-Density Parity Check (LDPC) decoder concatenated to the proposed BLE and BNLE.