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Wireless Communications Letters, IEEE

Issue 1 • Date February 2012

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Displaying Results 1 - 15 of 15
  • Table of contents

    Publication Year: 2012 , Page(s): c1 - c4
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  • Staff List

    Publication Year: 2012 , Page(s): c2
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  • New Space Shift Keying Modulation with Hamming Code-Aided Constellation Design

    Publication Year: 2012 , Page(s): 2 - 5
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (210 KB) |  | HTML iconHTML  

    A modulation scheme that maps the information onto the antenna indices, such as space shift keying (SSK) and its generalized form (namely, generalized SSK or GSSK), presents an attractive option for the emerging large-scale MIMO system due to the reduced algorithm and hardware cost. In this letter, we present a new modulation scheme in this category, where we propose use of the Hamming code constr... View full abstract»

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  • Fair Traffic Relaying for Two-Source-One-Destination Wireless Networks

    Publication Year: 2012 , Page(s): 1 - 4
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (248 KB) |  | HTML iconHTML  

    We propose a communication strategy for a three-node wireless network, where the relay nodes generate their own data besides decoding and forwarding other nodes messages. Unlike previous work, we consider that the nodes are arbitrarily located on a 2D plane, are equipped with half-duplex radios and require a fair rate allocation. We quantify the performance in terms of achievable rate as the SNR c... View full abstract»

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  • Spatial Multipath Resolution for MIMO Systems

    Publication Year: 2012 , Page(s): 10 - 13
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (318 KB) |  | HTML iconHTML  

    Wireless multiple-input multiple-output (MIMO) terminals with a large number of antennas are becoming a reality, increasing the spatial spatial degree of freedoms (DoFs) available at the terminals. This paper proposes exploiting the excess spatial DoFs available at the receiver for spatial multipath resolution. A rake-receiver structure, whose fingers are implemented through spatial signal process... View full abstract»

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  • Efficient Linear Transmission Strategy for MIMO Relaying Broadcast Channels with Direct Links

    Publication Year: 2012 , Page(s): 14 - 17
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (304 KB) |  | HTML iconHTML  

    In this letter, a novel linear transmission strategy to design the linear precoding matrix (PM) at base station (BS) and the beamforming matrix (BM) at relay station (RS) for multiple-input multiple-output (MIMO) relaying broadcast channels with direct channel (DC) is proposed, in which a linear PM is designed at BS based on DC, and the RS utilizes the PM, the backward channel and the forward chan... View full abstract»

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  • ASER of Rectangular MQAM in Noise-Limited and Interference-Limited MIMO MRC Systems

    Publication Year: 2012 , Page(s): 18 - 21
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (219 KB) |  | HTML iconHTML  

    Novel expressions for the average symbol error rate (ASER) of general rectangular quadrature amplitude modulation (QAM) in Rayleigh fading are derived in this work for MIMO MRC systems. The number of antennas is assumed to be arbitrary at both the transmit and receive ends and, unlike previous related work, expressions are given in terms of finite summations where all the terms are explicitly give... View full abstract»

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  • Novel SISO Detection Algorithms for Nonlinear Satellite Channels

    Publication Year: 2012 , Page(s): 22 - 25
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (185 KB) |  | HTML iconHTML  

    We propose novel detection algorithms for linear modulations transmitted over nonlinear satellite channels. These algorithms are derived by using a Volterra-series expansion of the useful signal and by applying the sum-product algorithm to a suitably-designed factor graph. Being soft-input soft-output (SISO) in nature, the proposed detectors can be adopted in turbo processing without additional mo... View full abstract»

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  • Optimal Power Allocation for Spectrum Sensing and Data Transmission in Cognitive Relay Networks

    Publication Year: 2012 , Page(s): 26 - 29
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (273 KB) |  | HTML iconHTML  

    In this letter, the problem of joint spectrum sensing and data transmission in a cognitive relay network is studied. An optimal power allocation (OPA) strategy is proposed to maximize the secondary throughput under both sensing performance and total power constraints. The OPA problem is transformed into seeking an optimal cognitive relay amplifying gain. Analytical and simulation results show that... View full abstract»

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  • A Framework for Location-Aware Strategies in Cognitive Radio Systems

    Publication Year: 2012 , Page(s): 30 - 33
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (300 KB) |  | HTML iconHTML  

    Sensing and power strategy optimization are important research topics in cognitive radio systems that hold the promise of advancing green communication. This letter gives a brief overview of the existing power allocation design in the literature and unifies them into a general power allocation framework. Based on the closed-form solution derived for this general problem, the impact of network topo... View full abstract»

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  • On the Joint Estimation of the RSS-Based Location and Path-loss Exponent

    Publication Year: 2012 , Page(s): 34 - 37
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (249 KB) |  | HTML iconHTML  

    Due to its straightforward implementation, the received signal strength (RSS) has been an advantageous approach for low cost localization systems. Although the propagation model is difficult to characterize in uncertain environments, the majority of current studies assume to have exact knowledge of the path-loss exponent (PLE). This letter deals with RSS based localization in an unknown path-loss ... View full abstract»

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  • A Low-Complexity Design of Linear Precoding for MIMO Channels with Finite-Alphabet Inputs

    Publication Year: 2012 , Page(s): 38 - 41
    Cited by:  Papers (10)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (290 KB) |  | HTML iconHTML  

    This paper investigates linear precoding scheme that maximizes mutual information for multiple-input multiple-output (MIMO) channels with finite-alphabet inputs. In contrast with recent studies, optimizing mutual information directly with extensive computational burden, this work proposes a low-complexity and high-performance design. It derives a lower bound that demands low computational effort a... View full abstract»

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  • Simplified Semi-Orthogonal User Selection for MU-MIMO Systems with ZFBF

    Publication Year: 2012 , Page(s): 42 - 45
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (273 KB) |  | HTML iconHTML  

    In this letter, we simplify the well-known semi-orthogonal user selection (SUS) algorithm for the multi-user multiple-input multiple-output (MU-MIMO) system with zero-forcing beamforming (ZFBF). Compared with the original SUS algorithm, the proposed user selection algorithm achieves the same performance, but with significantly less complexity. Simulation results show that the proposed algorithm ca... View full abstract»

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  • Distributed Private Key Generation for Identity Based Cryptosystems in Ad Hoc Networks

    Publication Year: 2012 , Page(s): 46 - 48
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (149 KB) |  | HTML iconHTML  

    Identity Based Cryptography (IBC) has the advantage that no public key certification is needed when used in a mobile ad hoc network (MANET). This is especially useful when bi-directional channels do not exist in a MANET. However, IBC normally needs a centralized server for issuing private keys for different identities. We give a protocol distributing this task among all users, thus eliminating the... View full abstract»

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  • IEEE Magnetics Society Information

    Publication Year: 2012 , Page(s): c3
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    Freely Available from IEEE

Aims & Scope

IEEE Wireless Communications Letters publishes shorter, high-quality manuscripts on advances in the state-of-the-art of wireless communications.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
DONG IN KIM
Sungkyunkwan University (SKKU)