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Improved Cooperative CDMA Using Blind Adaptive Interference Cancellation

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posted on 2023-06-07, 23:04 authored by I Shakya, Falah AliFalah Ali, E Stipidis
In this paper, we introduce blind adaptive interference cancellation for a practical uplink CDMA effected by multiple access interference (MAI) in cooperative communications systems scenario. During the collaboration phase, each paired users exchange their data to communicate with the base-station by using their own and pairing users' channels to achieve the spatial diversity. The base-station performs ranking of users' power and detects the strongest using the successive interference cancellation (SIC) principle to gradually remove MAI from the desired signals. The proposed scheme uses an improved SIC which performs adaptive despreading to form better estimates of users' data and then uses blind MAI estimation and cancellation by making use of the despreader weights to minimize the residual MAI. Simulation results show that the scheme achieves better diversity gain and allows much higher number of users to share the same bandwidth compared with conventional cooperative schemes.

History

Publication status

  • Published

Publisher

IEEE

Pages

6.0

Presentation Type

  • paper

Event name

5th International Conference on Broadband Communications Networks and Systems, SEP 08-11, 2008

Event location

London, ENGLAND

Event type

conference

ISBN

9781424423910

Department affiliated with

  • Engineering and Design Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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