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Non-orthogonal random waveform based multiuser communications

Non-orthogonal random waveform based multiuser communications
Non-orthogonal random waveform based multiuser communications
This thesis is aimed at providing a unified treatment of non-orthogonal random waveform based multiuser communications, commencing from the underlying theory and providing the way to sophisticated applications. In Chapter 2, we introduce the general framework of non-orthogonal random waveform based multiuser communications, where we focus our attention on the fundamental theory behind this topic. We then pay particular attention to three general application aspects, where the principle of non-orthogonal random waveform based multiuser communications may be exploited. These are applied to cellular systems in Chapter 3, to cooperative systems in Chapter 4 and they are combined with a practical Hybrid Automatic Repeat reQuest (HARQ) system in Chapter 5.
In the cellular system scenario presented in Chapter 3, we discuss three design tradeoffs ofMulti-Carrier Interleave Division Multiple Access (MC-IDMA) with the aid of EXtrinsic InformationTransfer (EXIT) charts. Based on the analysis of IDMA, we generalise the principle of nonorthogonal random waveform based multiuser communications, leading to the so-called Interleaved Random Code Division Multiple Access (IR-CDMA) concept. We also consider an interference-limited cooperative system in Chapter 4, where we propose a novel Interleaved Random Space Time Code (IR-STC) scheme, which is specifically designed for aMulti-Source Cooperation (MSC) scenario. Furthermore, the network coding concept is also employed, when designing a coded MSC arrangement for the sake of improving the attainable energy efficiency. More specifically, the proposed Physical-layer Algebraic Network Coding (PANC) scheme implicitly inherits the random coding principle applied in a distributed manner. In Chapter 5, we proceed by proposing a novel SuperPosition Coding (SPC) aided multiplexed HARQ scheme for substantially improving the overall end-to-end transmission efficiency.
In parallel to presenting our general framework of non-orthogonal random waveform based multiuser communications, we bear in mind that employing a powerful Multi-User Detector (MUD) for maintaining a near-single-user performance is of high importance. Hence, in Chapter 6 we propose a novel so-called Harmony Search (HS) algorithm for joint iterative channel estimation, data detection and channel decoding. The algorithm proposed can be readily employed to replace all detection algorithms used throughout Chapters 3 to 5, when a high throughput is desired.
Zhang, Rong
01d9cca6-86b0-4fb4-bb9f-77f38d96fd4f
Zhang, Rong
01d9cca6-86b0-4fb4-bb9f-77f38d96fd4f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Zhang, Rong (2009) Non-orthogonal random waveform based multiuser communications. University of Southampton, School of Electronics and Computer Science, Doctoral Thesis, 220pp.

Record type: Thesis (Doctoral)

Abstract

This thesis is aimed at providing a unified treatment of non-orthogonal random waveform based multiuser communications, commencing from the underlying theory and providing the way to sophisticated applications. In Chapter 2, we introduce the general framework of non-orthogonal random waveform based multiuser communications, where we focus our attention on the fundamental theory behind this topic. We then pay particular attention to three general application aspects, where the principle of non-orthogonal random waveform based multiuser communications may be exploited. These are applied to cellular systems in Chapter 3, to cooperative systems in Chapter 4 and they are combined with a practical Hybrid Automatic Repeat reQuest (HARQ) system in Chapter 5.
In the cellular system scenario presented in Chapter 3, we discuss three design tradeoffs ofMulti-Carrier Interleave Division Multiple Access (MC-IDMA) with the aid of EXtrinsic InformationTransfer (EXIT) charts. Based on the analysis of IDMA, we generalise the principle of nonorthogonal random waveform based multiuser communications, leading to the so-called Interleaved Random Code Division Multiple Access (IR-CDMA) concept. We also consider an interference-limited cooperative system in Chapter 4, where we propose a novel Interleaved Random Space Time Code (IR-STC) scheme, which is specifically designed for aMulti-Source Cooperation (MSC) scenario. Furthermore, the network coding concept is also employed, when designing a coded MSC arrangement for the sake of improving the attainable energy efficiency. More specifically, the proposed Physical-layer Algebraic Network Coding (PANC) scheme implicitly inherits the random coding principle applied in a distributed manner. In Chapter 5, we proceed by proposing a novel SuperPosition Coding (SPC) aided multiplexed HARQ scheme for substantially improving the overall end-to-end transmission efficiency.
In parallel to presenting our general framework of non-orthogonal random waveform based multiuser communications, we bear in mind that employing a powerful Multi-User Detector (MUD) for maintaining a near-single-user performance is of high importance. Hence, in Chapter 6 we propose a novel so-called Harmony Search (HS) algorithm for joint iterative channel estimation, data detection and channel decoding. The algorithm proposed can be readily employed to replace all detection algorithms used throughout Chapters 3 to 5, when a high throughput is desired.

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Published date: June 2009
Organisations: University of Southampton

Identifiers

Local EPrints ID: 66594
URI: http://eprints.soton.ac.uk/id/eprint/66594
PURE UUID: b39654a4-6b08-4d6b-846c-929da4fa570c
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 01 Jul 2009
Last modified: 14 Mar 2024 02:33

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Contributors

Author: Rong Zhang
Thesis advisor: Lajos Hanzo ORCID iD

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