NDLI: Performance Improvement of Cooperative MB-OFDM System Based Coming Home Network

Content Provider	IEEE Xplore Digital Library
Author	Jee-Hoon Kim Hyoung-Kyu Song
Copyright Year	1975
Abstract	Since ultra wideband (UWB) system aims at low complexity, low cost, and low power consumption, employing multiple antennas seems not to be a good approach to improving error performance for UWB devices. On the contrary, recently developed cooperative diversity technique, which profits the transmit diversity only with the existing hardware by constituting a virtual antenna array, can be a solution. However, most of the introduced cooperative techniques have a common fault of decreased transmission rate because the destination should receive the decodable compositions of symbols from the source and the relay. In this paper, we propose an alternative use of hierarchical modulation and a suitable cooperative space-time block code (C-STBC). This technique is free from the rate-loss and allows seamless cooperative communication while similar diversity gain is benefited. The proposed technique is evaluated in terms of bit error rate (BER) for multi-band orthogonal frequency division multiplexing (MB-OFDM) system. Simulation results show that cooperative system based on our technique outperforms noncooperative one when relatively reliable source-to-relay link (S-R link) is guaranteed.
Sponsorship	IEEE Consumer Electronics Society
File Size	1168916
File Format	PDF
ISSN	00983063
Volume Number	53
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Home automation Bit error rate Ultra wideband technology Costs Energy consumption Ultra wideband antennas Hardware Transmitting antennas Antenna arrays Decoding
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Media Technology

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