Title :
On List Detection for Overloaded Receivers
Author :
Krause, Michael ; Taylor, Desmond P. ; Martin, Philippa A.
Author_Institution :
Univ. of Canterbury, Christchurch
Abstract :
Excessive co-channel interference (CCI) occurs in overloaded wireless environments where the number of transmitted signals exceeds the number of available receive antennas. We present a list-based multiuser detection scheme that effectively mitigates CCI in overloaded receivers with a circular array. The algorithm is named parallel symbol detection with reduced complexity interference estimation (PSD-RCIE). It employs an iterative parallel detector with list feedback of the best symbol estimates. Simulations show that our algorithm achieves near joint-maximum likelihood detection at a fraction of the complexity. Its good complexity-performance trade-off together with its parallel structure make PSD-RCIE well suited for practical implementation.
Keywords :
antenna arrays; cochannel interference; iterative methods; maximum likelihood detection; multiuser detection; radio receivers; receiving antennas; circular antenna array; cochannel interference; iterative parallel detector; joint-maximum likelihood detection; list-based multiuser detection scheme; overloaded wireless receivers; parallel symbol detection; receiving antennas; reduced complexity interference estimation; Delay estimation; Detectors; Feedback; Interchannel interference; Iterative algorithms; Matched filters; Multiuser detection; Radiofrequency interference; Receiving antennas; Vectors;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-1144-3
Electronic_ISBN :
978-1-4244-1144-3
DOI :
10.1109/PIMRC.2007.4394605
