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Coded cooperation in wireless communications: space-time transmission and iterative decoding (2004)
| Venue: | IEEE Trans. Signal Processing |
| Citations: | 200 - 3 self |
BibTeX
@ARTICLE{Janani04codedcooperation,
author = {Mohammad Janani and Ahmadreza Hedayat and Todd E. Hunter and Student Member and Student Member and Student Member and Aria Nosratinia},
title = {Coded cooperation in wireless communications: space-time transmission and iterative decoding},
journal = {IEEE Trans. Signal Processing},
year = {2004},
volume = {52},
pages = {362--371}
}
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Abstract
Abstract—When mobiles cannot support multiple antennas due to size or other constraints, conventional space-time coding cannot be used to provide uplink transmit diversity. To address this limitation, the concept of cooperation diversity has been introduced, where mobiles achieve uplink transmit diversity by relaying each other’s messages. A particularly powerful variation of this principle is coded cooperation. Instead of a simple repetition relay, coded cooperation partitions the codewords of each mobile and transmits portions of each codeword through independent fading channels. This paper presents two extensions to the coded cooperation framework. First, we increase the diversity of coded cooperation in the fast-fading scenario via ideas borrowed from space-time codes. We calculate bounds for the bit- and block-error rates to demonstrate the resulting gains. Second, since cooperative coding contains two code components, it is natural to apply turbo codes to this framework. We investigate the application of turbo codes in coded cooperation and demonstrate the resulting gains via error bounds and simulations. Index Terms—Channel coding, diversity, space-time coding, user cooperation, wireless communications.
Keyphrases
wireless communication iterative decoding space-time transmission resulting gain turbo code uplink transmit diversity coded cooperation user cooperation code component cooperative coding contains cooperation partition support multiple antenna cooperation framework space-time code cooperation diversity block-error rate fast-fading scenario independent fading channel conventional space-time coding cannot index term channel coding space-time coding powerful variation simple repetition relay transmits portion error bound
