2010 Australian Communications Theory Workshop (AusCTW)

2-5 Feb. 2010

Filter Results

Displaying Results 1 - 25 of 36
  • [CD cover]

    Publication Year: 2010
    Request permission for commercial reuse | PDF file iconPDF (293 KB)
    Freely Available from IEEE
  • [CD cover]

    Publication Year: 2010
    Request permission for commercial reuse | PDF file iconPDF (118 KB)
    Freely Available from IEEE
  • [Title page]

    Publication Year: 2010, Page(s): i
    Request permission for commercial reuse | PDF file iconPDF (123 KB)
    Freely Available from IEEE
  • Table of contents

    Publication Year: 2010, Page(s):ii - iv
    Request permission for commercial reuse | PDF file iconPDF (29 KB)
    Freely Available from IEEE
  • [Copyright notice]

    Publication Year: 2010, Page(s): v
    Request permission for commercial reuse | PDF file iconPDF (59 KB)
    Freely Available from IEEE
  • Message from AusCTW10 organizing committee chair

    Publication Year: 2010, Page(s):vi - vii
    Request permission for commercial reuse | PDF file iconPDF (115 KB) | HTML iconHTML
    Freely Available from IEEE
  • Message from the technical program committee

    Publication Year: 2010, Page(s): viii
    Request permission for commercial reuse | PDF file iconPDF (48 KB) | HTML iconHTML
    Freely Available from IEEE
  • Workshop committee

    Publication Year: 2010, Page(s):ix - x
    Request permission for commercial reuse | PDF file iconPDF (401 KB)
    Freely Available from IEEE
  • Workshop sponsors

    Publication Year: 2010
    Request permission for commercial reuse | PDF file iconPDF (146 KB)
    Freely Available from IEEE
  • Wideband interference in pilot symbol assisted OFDM systems

    Publication Year: 2010, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB) | HTML iconHTML

    Spectrum sharing systems such as cognitive radios must both strive to avoid interference and be tolerant to interference. While pilot symbol assisted systems have previously been shown to have detection and synchronization adversely affected by narrowband interference, the impact of wideband interference has received little attention. This paper shows both analytically and by computer simulation t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An achievable rate region for Broadcast-Relay Networks with partial cooperation between relays

    Publication Year: 2010, Page(s):7 - 12
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (129 KB) | HTML iconHTML

    In this paper, we consider a different strategy for broadcast-relay-networks (BRN) with two relays. There are a transmitter, two relays and two receivers in this network. The message of the transmitter intended to the receivers, has both common and private parts. The relays partially cooperate with each other and with the transmitter to send the common part of the message. The private parts of the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Capacity analysis of MIMO three product channels

    Publication Year: 2010, Page(s):13 - 18
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (169 KB) | HTML iconHTML

    The paper presents an ergodic capacity analysis of MIMO three product channels. We first derive the exact non-asymptotic and asymptotic probability density functions of the arbitrary eigenvalue of the system. From these, a non-asymptotic and asymptotic expression for the ergodic capacity of the system is derived. The non-asymptotic results involve several single numerical integrations and the numb... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On performance limits of coded asymmetric OFDM systems over multipath fading channels

    Publication Year: 2010, Page(s):19 - 23
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (140 KB) | HTML iconHTML

    We investigate performance limits of a coded asymmetric OFDM (A-OFDM) system in multipath fading channels when maximum-likelihood (ML) detection is deployed. Our A-OFDM formulation is general and the analysis extends to coded OFDM (COFDM), precoded COFDM and single carrier systems. At first, an exact pairwise error probability is evaluated based on Craig's alternative form of the Q-function. Then ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Linear Programming bound for Unequal Error Protection codes

    Publication Year: 2010, Page(s):24 - 29
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (132 KB) | HTML iconHTML

    In coding theory, it is important to calculate an upper bound for the size of codes given the length and minimum distance. The linear programming (LP) bound is known as a good upper bound for the size of codes. On the other hand, Unequal error protection (UEP) codes have been studied in coding theory. In UEP codes, a codeword has special bits which are protected against a greater number of errors ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 3D Mobile-to-Mobile wireless channel model

    Publication Year: 2010, Page(s):30 - 34
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (809 KB) | HTML iconHTML

    A three-dimensional single-input single-output Mobile-to-Mobile wireless channel model is developed in this paper by considering the underlying physics of free space wave propagation. Based on this channel model, the temporal correlation function for a general three dimensional scattering environment is derived. The temporal correlation function is characterized by the joint angular power distribu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Context-awareness and intelligence in Distributed Cognitive Radio Networks: A Reinforcement Learning approach

    Publication Year: 2010, Page(s):35 - 42
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (218 KB) | HTML iconHTML

    Cognitive radio (CR) is a next-generation wireless communication system that exploits underutilized licensed spectrum to improve the utilization of the overall radio spectrum. A distributed cognitive radio network (DCRN) is a distributed wireless network established by a number of CR hosts in the absence of fixed network infrastructure. Context-awareness and intelligence are key characteristics of... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The effect of cycles on binary message-passing decoding of LDPC codes

    Publication Year: 2010, Page(s):43 - 47
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (123 KB) | HTML iconHTML

    We study the error-floor behavior of binary message-passing decoders for low-density parity-check (LDPC) codes. We find that the stability condition is independent of the quality of the channel messages (i.e. soft or hard decision). Furthermore, we identify a structure in the graph where the involved variable nodes cannot be corrected by the binary message-passing decoder. This leads to an error f... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Data and channel aided symbol timing estimation for cooperative communications

    Publication Year: 2010, Page(s):48 - 53
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (148 KB) | HTML iconHTML

    A data and channel aided maximum likelihood (DCA-ML) symbol timing estimator for cooperative communications operating in flat fading channels is presented. The performance of the estimator is evaluated in terms of bit-error-rate (BER) and estimator variance. The BER performance is evaluated in various fading conditions and compared to a non-data-aided near maximum likelihood (NDA-NML) timing estim... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the capacity region of semi-deterministic Multiple-Access-Relay-Networks

    Publication Year: 2010, Page(s):54 - 58
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (119 KB) | HTML iconHTML

    In this paper, we introduce a generalization of the multiple-access-relay-channel (MARC) called multiple-access-relay-network (MARN). In the proposed network, there are many transmitters, many relays and one receiver. The MARC model was first introduced by Kramer and consists of many transmitters, one receiver and only one relay.We also define semi-deterministic MARN, in which the output of the li... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modified Constant Modulus Algorithm for joint blind equalization and synchronization

    Publication Year: 2010, Page(s):59 - 64
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (714 KB) | HTML iconHTML

    The development of low-complexity blind techniques for equalization, timing and carrier offset recovery is of enormous importance in the design of high data rate wireless systems. In this paper, we propose a practical solution for blind equalization, timing recovery and small carrier offset correction in slowly-fading frequency selective wireless communication channels. We extend the Modi ed Const... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Block noncoherent detection of hexagonal QAM

    Publication Year: 2010, Page(s):65 - 70
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (154 KB) | HTML iconHTML

    We consider block noncoherent detection of hexagonal quadrature amplitude modulation (QAM). We focus on hexagonal constellations generated from a Voronoi code. We find that these constellations are particularly well suited to noncoherent detection because they avoid most of the identifiability problems that occur with more traditional constellations. We describe a fast, approximate, noncoherent de... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Iterative timing recovery for IDMA receivers operating under severe timing drift

    Publication Year: 2010, Page(s):71 - 76
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (186 KB) | HTML iconHTML

    Recently interleaved division multiple access (IDMA) has been proposed as an enhancement for 3GPP wireless broadband standards. Timing synchronisation in an IDMA system must take place in conjunction with signal detection and decoding. This paper compares an iterative timing recovery technique with a conventional timing recovery approach for IDMA systems in the uplink. Under high multiple access i... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The asymmetric Gaussian parallel relay network

    Publication Year: 2010, Page(s):77 - 80
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (159 KB)

    In this paper we consider the real, discrete time asymmetric Gaussian parallel relay network, the more realistic model than the symmetric one considered by Schein-Gallagar. We present achievable rates for this network that are superior rates to the Schein-Gallagar rates. The proposed methods are based on the superimposition technique used for the degraded broadcast channel and also cooperation of ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A generic conflict-free architecture for decoding LDPC codes using Perfect Difference Networks

    Publication Year: 2010, Page(s):81 - 86
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (138 KB) | HTML iconHTML

    The flurry of activities in the area of low density parity check (LDPC) codes from last one decade have led to different flavors of codes and the corresponding decoders. The decoder involves computing elements and an interconnection mechanism, usually tailor made for a particular code. This paper explores a generic reconfigurable architecture for decoding different LDPC codes based on the perfect ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Robust design for linear non-regenerative MIMO relays

    Publication Year: 2010, Page(s):87 - 92
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (141 KB) | HTML iconHTML

    Optimal source precoding matrix and relay amplifying matrices have been developed in recent works for linear non-regenerative multiple-input multiple-output (MIMO) relay communication systems. All these works require the channel state information (CSI) knowledge in order to perform the optimization. However, in practical relay systems, the CSI is unknown and has to be estimated. There is always mi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.