已知接收机干扰结构的结构化脏纸编码

Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005. Pub Date : 1900-01-01 DOI:10.1109/ACSSC.2005.1599829

B. Liu, Hui Liu, S. Roy

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引用次数: 8

摘要

Tomlinson-Harashima预编码是众所周知的脏纸编码实现。尽管它很简单，但由于模运算，THP在低信噪比区域的性能损失很大。本文利用已知的干扰调制结构(如BPSK和QPSK信号)，提出了一种新的脏纸预编码方案。这种新方法被称为结构化DPC (SDPC)，在对发射器和接收器进行适度改变的情况下，其性能优于常规THP。对于所研究的BPSK和QPSK情况，SDPC仅遭受功率损失，与无干扰情况相比，功率损失高达1.25 dB，而常规的基于thp的标量脏纸编码在相同的低信噪比区域具有典型的4-5 dB容量损失

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Structured Dirty Paper Coding with Known Interference Structure at Receiver

The Tomlinson-Harashima precoding is well known for dirty paper coding implementation. Despite its simplicity, THP suffers from a significant performance loss in the low SNR region due to modulo operations. In this paper, we propose new dirty paper precoding scheme by taking advantage of the known modulation structure of interference (e.g., BPSK and QPSK signals). The new method, termed structured DPC (SDPC), outperforms the regular THP with modest changes to the transmitter and receiver. For BPSK and QPSK cases investigated, the SDPC only suffers power loss, which is up to 1.25 dB compared with non-interference case, while the regular THP-based scalar dirty paper coding has a typical 4-5 dB capacity loss in the same low SNR regions

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Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005.

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