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Content Provider | IET Digital Library |
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Author | Hwang, Ji Won Bahaei, Mohammad Shikh |
Abstract | Link adaptation using adaptive modulation and coding (AMC) is a popular physical layer technique for efficient use of time-varying fading channels. Using a cross-layer approach, AMC and truncated automatic repeat request scheme at data link layer are jointly considered. For a convolutionally-coded M-ary quadrature amplitude modulation system under block fading channel condition, a variable rate transmission scheme that uses imperfect channel state information is derived. First, a closed-form expression for approximating packet error rate (PER) is found as a function of coded information rate. It is then shown that by solving an optimisation problem using this expression, optimum transmission rate can be determined in a way that maximises the spectral efficiency while satisfying an average PER constraint. Hence, the parameters in physical and medium access control layers are incorporated in the analysis. |
Starting Page | 878 |
Ending Page | 884 |
Page Count | 7 |
ISSN | 17518628 |
Volume Number | 8 |
e-ISSN | 17518636 |
Issue Number | Issue 6, Apr (2014) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/8/6 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2013.0678 |
Journal | IET Communications |
Publisher Date | 2014-03-04 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Access Protocols Adaptive Codes Adaptive Modulation And Coding AMC Amplitude Modulation Block Fading Channel Closed-form Expression Code Coded Information Rate Convolutionally-coded M-ary Quadrature Amplitude Modulation System Cross-layer Approach Data Link Layer Fading Channel Imperfect Channel State Information Link Adaptation Medium Access Control Layer Optimisation Optimisation Problem Optimisation Technique Optimum Transmission Rate Packet Error Rate-based Adaptive Rate Optimisation PER Constraint Physical Layer Technique Protocol Quadrature Amplitude Modulation Radio Link And Equipment Selective-repeat Automatic Repeat Request Spectral Efflciency Time-varying Fading Channel Truncated Automatic Repeat Request Scheme Variable Rate Transmission Scheme |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering Computer Science Applications |
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