Detection of multiuser orthogonal space-time block coded signals via ordered successive interference cancellation

Wu, Jwo-Yuh; Ho, Chung-Lien; Lee, Ta-Sung

doi:10.1109/twc.2006.1673066

Cited by 3 publications

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Closed-loop Grouped Space–Time Block Code: Encoding, Decoding and Codeword Selection

Tseng

Lee

2007

Wireless Pers Commun

View full text Add to dashboard Cite

A design of closed-loop grouped space-time block codes (G-STBCs) including encoding, decoding and codeword selection is proposed for the downlink over Rayleigh flat-fading channels. In particular, at the transmitter, the antenna array is partitioned into a number of groups, each of which is encoded based on the orthogonal STBC (O-STBC). At the receiver, by exploiting the algebraic structure of orthogonal codes, a low-complexity, in recursion form, group-wise ordered successive interference cancellation (OSIC) detector is developed. Moreover, the G-STBC codeword is designed and a G-STBC codeword selection criterion that minimizes the BER performance under the constraints of a fixed spectral efficiency and total transmit power is then proposed. The selection index of the G-STBC codeword and the associated modulation type are determined at the receiver and conveyed to the transmitter with a limited feedback overhead to choose an appropriate mode for transmission. Finally, Numerical examples are used for illustrating the performance of the proposed G-STBCs, OSIC based detection and G-STBC codeword selection criterion.Keywords Multi-input multi-output (MIMO) · Grouped space-time block code (G-STBC) · Ordered successive interference canceller (OSIC) · Closed-loop

show abstract

Closed-loop Grouped Space–Time Block Code: Encoding, Decoding and Codeword Selection

Tseng

Lee

2007

Wireless Pers Commun

View full text Add to dashboard Cite

show abstract

Improved Partial Parallel Decision Feedback Multiuser Detection for Multiuser-MIMO System

Wang

et al. 2011

2011IEEE 10th International Conference on Trust, Security and Privacy in Computing and Communications

View full text Add to dashboard Cite

Group-wise V-BLAST detection in multiuser space-time dual-signaling wireless systems

Lee

2006

IEEE Trans. Wireless Commun.

View full text Add to dashboard Cite

This paper studies the V-BLAST detection in a general multiuser space-time wireless system, in which each user's data stream is either (orthogonal) space-time block coded (OSTBC) for transmit diversity or spatially multiplexed (SM) for high spectral efficiency. The motivation behind this work is that each user adopting a signaling scheme better matched to his own channel condition proves to improve the individual link performance but the resultant co-channel interference mitigation problem is scarcely addressed thus far. By exploiting the algebraic structure of orthogonal code, it is shown that the V-BLAST detector in the considered dual-signaling environment allows for an attractive group-wise implementation: at each iteration a group of symbols, transmitted either from an OSTBC station or from an antenna of an SM terminal, are jointly detected. The group detection property, resulting uniquely from the use of orthogonal codes, potentially improves the dual-mode signal separation efficiency, especially when the OSTBC terminals are dense in the cell. The imbedded structure of the channel matrix is also exploited for deriving a computationally efficient detector implementation. Flop count evaluations and numerical examples are used for illustrating the performance of the proposed V-BLAST based solution.Index Terms-Multiuser detection, spatial multiplexing, spacetime block codes, vertical Bell Labs layered space-time (V-BLAST), multiple-input multiple-output (MIMO).

show abstract

Detection of multiuser orthogonal space-time block coded signals via ordered successive interference cancellation

Cited by 3 publications

References 22 publications

Closed-loop Grouped Space–Time Block Code: Encoding, Decoding and Codeword Selection

Closed-loop Grouped Space–Time Block Code: Encoding, Decoding and Codeword Selection

Improved Partial Parallel Decision Feedback Multiuser Detection for Multiuser-MIMO System

Group-wise V-BLAST detection in multiuser space-time dual-signaling wireless systems

Contact Info

Product

Resources

About