Successive interference cancellation (SIC) in V-BLAST systems with asynchronous transmission mode. (English) Zbl 1181.94051
Summary: The V-BLAST system with asynchronous transmission mode first proposed by Shao can achieve full diversity only by using a simple linear detection scheme under zero forcing (ZF) criterion; therefore it gives a reasonable tradeoff between complexity and performance. In this paper, we propose two types of successive interference cancellation (SIC) detection schemes for the asynchronous V-BLAST system, one is characterized by applying \(M_r\) successive interference cancellators before a maximal ratio combiner (where \(M_r\) is the number of receive antennas), and the other has a maximal ratio combiner before a successive interference cancellator. Since Type I consumes more energy of the previously detected signals to recover a signal, Type II can offer a better performance and simulations demonstrate its validity.
MSC:
| 94A12 | Signal theory (characterization, reconstruction, filtering, etc.) |
Keywords:
asynchronous transmission; successive interference cancellation (SIC); vertical Bell labs architecture of layered space-time (V-BLAST)References:
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