| Presentation | 2003/11/13 Multiple Access Interference in Frequency-Selective Fading Channels on Uplink MC-CDMA Takashi SHONO, Tomoyuki YAMADA, Kiyoshi KOBAYASHI, Katsuhiko ARAKI, Iwao SASASE, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | MC-CDMA has been attracting considerable attention for future broadband mobile communications due to its robustness against delay and its high bandwidth efficiency in the multi-cell environment. In the uplink, however, the asynchronous reception of each user's OFDM symbols and the inter-code interference (ICI) caused by the independent frequency-selective fading channel of each user result in multiple access interference (MAI). In this report, we evaluate the ICI in frequency-selective fading channels on uplink MC-CDMA. At first, we derive theoretical expressions for the desired-to-undesired signal power ratio (DUR) as ICI for arbitrary spreading sequences and validate them by comparison with computer simulations using a Walsh-Hadamard code. Based on the results of a theoretical analysis, we calculate the optimum spreading sequence that maximizes the performance of uplink MC-CDMA. Two symbol combining methods are examined : equal gain combining (EGC) and maximum ratio combining (MRC). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MC-CDMA / OFDM / inter-code interference / desired-to-undesired signal power ratio |
| Paper # | A・P2003-174,RCS2003-180 |
| Date of Issue |
| Conference Information | |
| Committee | AP |
|---|---|
| Conference Date | 2003/11/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Antennas and Propagation (A・P) |
|---|---|
| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Multiple Access Interference in Frequency-Selective Fading Channels on Uplink MC-CDMA |
| Sub Title (in English) | |
| Keyword(1) | MC-CDMA |
| Keyword(2) | OFDM |
| Keyword(3) | inter-code interference |
| Keyword(4) | desired-to-undesired signal power ratio |
| 1st Author's Name | Takashi SHONO |
| 1st Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation() |
| 2nd Author's Name | Tomoyuki YAMADA |
| 2nd Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 3rd Author's Name | Kiyoshi KOBAYASHI |
| 3rd Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 4th Author's Name | Katsuhiko ARAKI |
| 4th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 5th Author's Name | Iwao SASASE |
| 5th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| Date | 2003/11/13 |
| Paper # | A・P2003-174,RCS2003-180 |
| Volume (vol) | vol.103 |
| Number (no) | 456 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |