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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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) |
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Topics (in Japanese) | (See Japanese page) |
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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 |