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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Chen Wei Pingyi Fan Letaief, K.B. |
| Copyright Year | 2007 |
| Description | Author affiliation: Tsinghua Univ., Beijing (Chen Wei; Pingyi Fan) |
| Abstract | In this paper, we consider the time-slotted ALOHA packetized multiple-access system where the transmission channels obey i.i.d (independent identically distributed) Rayleigh fading. Two fundamental problems are considered. The first one is the calculation of system capacity, and the second one is how to select a channel coding for the system achieving its capacity. Here we firstly review the single time slotted capacity, and present the total capacity expression with the knowledge of channel side information. Then we deduce a threshold thetas for transmission probability in a single time slot provided that all the users have the same transmission probability. It will be proved that when transmission probability is greater than the threshold thetas, low-resolution code can help the system achieve its capacity. Moreover, we present an explicit threshold estimation, and prove that it can be extended to a more general case when transmission probabilities are approximately equal. In the end, simulation and numerical results show the validity and robustness of theoretical results. |
| Starting Page | 5975 |
| Ending Page | 5980 |
| File Size | 295637 |
| Page Count | 6 |
| File Format | |
| ISBN | 1424403537 |
| DOI | 10.1109/ICC.2007.990 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-06-24 |
| Publisher Place | UK |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Channel coding Fading Communications Society Radio transmitters Distributed computing Rayleigh channels Capacity planning Numerical simulation Robustness Channel capacity |
| Content Type | Text |
| Resource Type | Article |
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