| Presentation | 1998/11/27 Design and Performance of OFDM for Broadband Wierless Access Systems Y. MATSUMOTO, S. MUNETA, N. MOCHIZUKI, M. UMEHIRA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Using the OFDM parameters for broadband wireless access systems, this paper first clarifies the performance disparities between the sets of modulation, detection and FEC rates, assuming the same information rate: psecifically, 8PSK and 16QAM for coherent detection, and D8PSK and 16DAPSK for differential detection are examined. It is revealed that 8PSK achieves substantial required-E_b/N_0 performance improvements over the others. Moreover, differential detection incurs severe PER performance degradation in non-linear environments and long-multipath-existing environments. For actual application of coherent detection, this paper proposed a RLS-algorithm-based initial-equalization (IE) scheme, with practical implementation in mind. It is revealed that the proposed scheme exhibits excellent PER performance when the preamble of 2 OFDM symbols or more is allowed for coherent detection. It also revealed that the simple frequency-domain IE scheme can be a practical choice when the single-FFT-period preamble must be used. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / Coherent detection / Differential detection / RLS / AFC / Pilot signal |
| Paper # | RCS98-162 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 1998/11/27(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| 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) | Design and Performance of OFDM for Broadband Wierless Access Systems |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | Coherent detection |
| Keyword(3) | Differential detection |
| Keyword(4) | RLS |
| Keyword(5) | AFC |
| Keyword(6) | Pilot signal |
| 1st Author's Name | Y. MATSUMOTO |
| 1st Author's Affiliation | NTT Wireless Comminication Systems Laboratories() |
| 2nd Author's Name | S. MUNETA |
| 2nd Author's Affiliation | NTT Wireless Comminication Systems Laboratories |
| 3rd Author's Name | N. MOCHIZUKI |
| 3rd Author's Affiliation | NTT Wireless Comminication Systems Laboratories |
| 4th Author's Name | M. UMEHIRA |
| 4th Author's Affiliation | NTT Wireless Comminication Systems Laboratories |
| Date | 1998/11/27 |
| Paper # | RCS98-162 |
| Volume (vol) | vol.98 |
| Number (no) | 435 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |