Open AccessProjected block‐wise PIC detection for communication systems with non‐negativity constraints
Author(s) -
Bentrcia Abdelouahab
Publication year - 2019
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2018.5761
Subject(s) - detector , computer science , single antenna interference cancellation , block (permutation group theory) , convergence (economics) , interference (communication) , code division multiple access , algorithm , real time computing , electronic engineering , telecommunications , mathematics , channel (broadcasting) , geometry , engineering , economics , economic growth
Recently, a number of interference cancellation (IC) detectors that exploit some prior information of the system have been proposed. Of particular interest is the projected parallel IC (PPIC) detector that makes use of the non‐negativity of the data and the spreading codes in incoherent optical‐code‐division multiple‐access systems to improve the detection performance. In this work, the authors generalise the PPIC detector where more than one user is considered at a time yielding the projected block‐wise parallel IC (PBPIC) detector. This detector not only accelerates the convergence speed considerably but also improves the conditions of convergence as well. Various approaches for reducing the complexity of the PBPIC detector are investigated. Simulation results agree well with the authors’ theoretical findings.