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2008

The performance of multi-user cooperative diversity in an asynchronous CDMA uplink

11 years 5 months ago
The performance of multi-user cooperative diversity in an asynchronous CDMA uplink
Abstract--This paper investigates the impact of interuser non-orthogonality and asynchronous communication on the information-outage probability performance of multi-user decode-and-forward (DF) cooperative diversity in a code-division multiple-access (CDMA) uplink. Each user in the proposed system transmits its own data towards the base station and also serves as a relay for other users. We assume full-duplex communication so that each user can transmit and receive simultaneously at the same frequency. Each user attempts to decode the messages of a plurality of other users and forwards the superposition of multiple re-encoded and re-spread messages. Our cooperative scheme employs a sub-optimum decorrelating receiver to suppress the multi-user interference at both the base station and the relay-side. We evaluate the informationoutage probability performance of the proposed scheme in an underloaded, fully-loaded and overloaded CDMA uplink. We consider combining schemes at the base stati...
Kanchan G. Vardhe, Daryl Reynolds, Matthew C. Vale
Added 16 Dec 2010
Updated 16 Dec 2010
Type Journal
Year 2008
Where TWC
Authors Kanchan G. Vardhe, Daryl Reynolds, Matthew C. Valenti
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