| Presentation | 2010-03-03 Coded Constellation Rotated Vector OFDM with Generalized Block Interleaver Design Chenggao HAN, Takeshi HASHIMOTO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Over a multi-path fading channel, it is well known fact that the diversity order of orthogonal frequency division multiplexing (OFDM) is only 1, hence the practical OFDM usually employs a convolutional coding (CC), called coded OFDM (COFDM), to attain diversity order min{P, d_f} where P and d_f are number of independent paths and free distance of the employed CC, respectively. To guarantee attainability of the maximum diversity order P, however, we have to employ a CC with d_f ≧ P and, for a long multi-path channel, it is practically un feasible due to a CC with large d_f involves high decoding complexity at the receiver. On the other hand, the single antenna vector OFDM (V-OFDM) proposed by Xia is a OFDM-like communication system with augmented property against to channel spectral nulls. By the way, V-OFDM does not necessarily attain diversity order min{P, M} with coupled length-M symbol vector and, for overcoming such drawback, we proposed the constellation-rotated V-OFDM (CRV-OFDM), in which each modulated symbol rotates its constellation before feeding into the V-OFDM transmitter. In this paper, by employing CC to the CRV-OFDM, we propose the coded CRV-OFDM (CCRV-OFDM) with generalized block interleaver (GBI). Performance analysis provides the fact that the CCRV-OFDM attains diversity order min{P, Mdf} and, the COFDM employing the GBI achieves better performance compare with the block interleaver (BJI) adopted in IEEE 802.11 standard. The superiority of the CCRV-OFDM and GBI on BER performance is confirmed by numerical comparison with coded V-OFDM (CV-OFDM) and COFDM. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / V-OFDM / CRV-OFDM / COFDM / interleaver / diversity order / convolutional code |
| Paper # | RCS2009-260 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2010/2/24(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Radio Communication Systems (RCS) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Coded Constellation Rotated Vector OFDM with Generalized Block Interleaver Design |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | V-OFDM |
| Keyword(3) | CRV-OFDM |
| Keyword(4) | COFDM |
| Keyword(5) | interleaver |
| Keyword(6) | diversity order |
| Keyword(7) | convolutional code |
| 1st Author's Name | Chenggao HAN |
| 1st Author's Affiliation | Department of Electronic Engineering, University of Electro-Communications() |
| 2nd Author's Name | Takeshi HASHIMOTO |
| 2nd Author's Affiliation | Department of Electronic Engineering, University of Electro-Communications |
| Date | 2010-03-03 |
| Paper # | RCS2009-260 |
| Volume (vol) | vol.109 |
| Number (no) | 440 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |