Name
Title | ||
|---|---|---|
Blind Multiuser Detection In Multirate Cdma Transmissions Using Fluctuations Of Correlation Estimators |
Abstract | ||
|---|---|---|
This paper deals with the problem of blind multiuser detection in multirate direct-sequence code division multiple access (DS-CDMA). Direct-Sequence Spread Spectrum (DS-SS) signals are well-known for their low probability of interception: their statistics are similar to those of a noise; furthermore, they are usually transmitted below the noise level. Here, the method based on the fluctuations of autocorrelation estimators, previously described in a single user context [1], is extended to multiusers. From the variable spreading length technique, we will evidence an increase of these periodical fluctuations and, on average, a relationship between their peak amplitudes and sequence lengths. A theoretical analysis will show that detection is possible, even with a very low signal-to-noise ratio (SNR) at the detector input. This approach will be illustrated with experimental results. The assessment of symbol periods allows one to start the synchronization process proposed recently in [2], [3], which also permits the determination of the number of interfering users in each group of users transmitting at the same symbol period, thus, conversely at the same data rate. |
Year | DOI | Venue |
|---|---|---|
2006 | 10.1109/GLOCOM.2006.592 | GLOBECOM 2006 - 2006 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE |
DocType | ISSN | Citations |
Conference | 1930-529X | 0 |
PageRank | References | Authors |
0.34 | 3 | 3 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| C. Nsiala Nzeza | 1 | 35 | 2.43 |
| Roland Gautier | 2 | 87 | 8.45 |
| G. Burel | 3 | 111 | 8.71 |