| Authors |
A. Sandouk, M. Harada, H. Okada, T. Yamazato, M. Katayama, A. Ogawa |
| Title |
BER Analysis for Multi-carrier DS CDMA with Multi-rate Traffic |
| Authority |
IEICE Transactions on Fundamentals, vol.E84-A, no.7, pp.1723-1731 |
| Summary |
In this letter, we present bit error analysis (BER) of orthogonal multi-carrier direct sequence code division multiple access
(DS-CDMA) system with multi-rate (multimedia) traffic. Analysis is carried out with random signature codes for an AWGN channel.
Interference in such a system is severe because all users of all media transmit over the same assigned sub-carriers. This makes the analysis
difficult. In our analysis, we divide this interference into different types and carry out our analysis to obtain the BER taking into account all
these types. We show that the performance of the system is improved as the number of assigned sub-carriers M increases until a limit where
the improvement does not continue even when M increases more. This is because of, as we show, the interference due to other sub-carriers
becomes constant even in the case of M->infinite and the interference in a multi-rate multi-carrier system is bigger than that in a single-carrier
(M=1) by a factor of pai^2/3. |
| 年月 |
2001年7月 |
| DOI/Handle |
|
| 研究テーマ |
|
| 言語 |
英語 |
| 原稿/プレゼン資料 |
 / 無し (ローカル限定) |
