NDLI: A concatenated coded multiplexing scheme for multiuser OFDM downlink

Content Provider	IEEE Xplore Digital Library
Author	Sayana, K. Gelfand, S.B.
Copyright Year	2003
Description	Author affiliation: Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA (Sayana, K.; Gelfand, S.B.)
Abstract	The allocation of available resources in an OFDM multiaccess system is usually done by allotting a fixed set of subcarriers to each user. Adaptive allocation has been suggested to improve performance and provide increased granularity in terms of minimum number of subcarriers available to each user. But it has several drawbacks associated with the need for robust channel estimates and computational loading algorithms at the transmitter. In this paper, we investigate an approach which spreads the data of all the users over the complete set of subcarriers by appropriate combination of coding, multiplexing and interleaving. We analyze the performance of such a system and demonstrate the potential for substantial coding, interleaving and diversity gains relative to fixed subcarrier allocation, but with lower computational and signaling cost than adaptive schemes. We also present simulations for a suboptimal decoding scheme when the setup is applied to multiuser scenarios.
Starting Page	2847
Ending Page	2851
File Size	311281
Page Count	5
File Format	PDF
ISBN	0780378024
DOI	10.1109/ICC.2003.1204537
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-05-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Concatenated codes OFDM Downlink Interleaved codes Resource management Multiaccess communication Robustness Transmitters Signal analysis Performance analysis
Content Type	Text
Resource Type	Article

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