Optimal Augmented-Channel Puncturing for Low-Complexity Soft-Output MIMO Detectors

01/29/2020
by   Mohammad M. Mansour, et al.
0

We propose a computationally-efficient soft-output detector for multiple-input multiple-output channels based on augmented channel puncturing in order to reduce tree processing complexity. The proposed detector, dubbed augmented WL detector (AWLD), employs a punctured channel with a special structure derived by triangulizing the original channel in augmented form, followed by Gaussian elimination. We prove that these punctured channels are optimal in maximizing the lower-bound on the achievable information rate (AIR) based on a newly proposed mismatched detection model. We show that the AWLD decomposes into a minimum mean-square error (MMSE) prefilter and channel-gain compensation stages, followed by a regular unaugmented WL detector (WLD). It attains the same performance as the existing AIR partial marginalization (AIR-PM) detector, but with much simpler processing.

READ FULL TEXT

page 1

page 2

page 3

page 4

research
12/09/2020

Low-Complexity Soft-Output MIMO Detectors Based on Optimal Channel Puncturing

Channel puncturing transforms a multiple-input multiple-output (MIMO) ch...
research
05/27/2019

Multi-User Detection Based on Expectation Propagation for the Non-Coherent SIMO Multiple Access Channel

We consider the non-coherent single-input multiple-output (SIMO) multipl...
research
06/11/2019

Adaptive Neural Signal Detection for Massive MIMO

Symbol detection for Massive Multiple-Input Multiple-Output (MIMO) is a ...
research
10/27/2021

A Bayesian Receiver with Improved Complexity-Reliability Trade-off in Massive MIMO Systems

The stringent requirements on reliability and processing delay in the fi...
research
12/05/2017

Large MIMO Detection Schemes Based on Channel Puncturing: Performance and Complexity Analysis

A family of low-complexity detection schemes based on channel matrix pun...
research
11/19/2019

Super-Nyquist Rateless Coding for Intersymbol Interference Channels

A rateless transmission architecture is developed for communication over...
research
09/04/2018

Equalization with Expectation Propagation at Smoothing Level

In this paper we propose a smoothing turbo equalizer based on the expect...

Please sign up or login with your details

Forgot password? Click here to reset