Presentation 2010-03-05
Unequal Error Protection based on Nested Transmit Diversity
Koji ISHII, Kozue HIRATA, Shimpei TOH, Minoru KUBOTA,
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Abstract(in English) We have previously proposed the transmit diversity scheme based on a nested code, which named nested transmit diversity. The characteristics of the nested transmit diversity are as follows. Without extra resources (e.g., antenna, time, frequency), the nested transmit diversity can obtain diversity gain over block Rayleigh fading channel. The encoding and decoding operation are simple but very efficient. In the nested transmit diversity scheme, each information sequence is encoded and superimposed onto the other codeword with XOR operation. Compared with a signal superposition (hierarchical) modulation, due to use of XOR operation, the nested transmit diversity has no waste of resource (transmission power) in the case when the receiver knows the superimposing factor. The performance of the nested transmit diversity depends on the number of superimposing (transmitting) and the reliability of superimposing factors. With above characteristics, we design a novel unequal error protection system. Prom the outage analyses, the performance deeply depends on the number of superimposing. Finally, we show the design criterion of the unequal error protection system with nested transmit diversity.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Unequal error protection system / nested transmit diversity technique / outage analysis
Paper # RCS2009-314
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Committee RCS
Conference Date 2010/2/24(1days)
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Registration To Radio Communication Systems (RCS)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Unequal Error Protection based on Nested Transmit Diversity
Sub Title (in English)
Keyword(1) Unequal error protection system
Keyword(2) nested transmit diversity technique
Keyword(3) outage analysis
1st Author's Name Koji ISHII
1st Author's Affiliation Reliability-based Information Systems Engineering, Kagawa University()
2nd Author's Name Kozue HIRATA
2nd Author's Affiliation Sharp Corporation
3rd Author's Name Shimpei TOH
3rd Author's Affiliation Sharp Corporation
4th Author's Name Minoru KUBOTA
4th Author's Affiliation Sharp Corporation
Date 2010-03-05
Paper # RCS2009-314
Volume (vol) vol.109
Number (no) 440
Page pp.pp.-
#Pages 6
Date of Issue