交织和BCH编码对蓝牙2.0数据传输性能的改善

蓝牙2.0+EDR规范新增DH分组没有有效的纠错机制，其抗干扰能力差。通过在新规范中加入BCH编码和交织编码，以改善蓝牙的数据传输吞吐量及抗干扰能力。对于新增的数据分组，根据蓝牙标准协议，推导了相应的分组特性；建立了GE信道下数据传输速率与信道突发错误水平的关系模型；获得了在不同信道突发错误水平下的数据传输吞吐量。结果表明，在蓝牙2.0+EDR新规范中加入BCH编码和交织编码，在较高突发错误水平的信道中，其数据传输吞吐量提高了一倍以上，明显改善了数据传输的抗干扰能力。

Improved Bluetooth 2.0 Data Throughput by Using Interleaving and BCH Codes

The new DHx packets are adopted in Bluetooth 2.0+EDR specification. Without any error correction coding mechanism, it has poor anti-interference ability in the burst errors channel. To enhance the data transmission throughput and anti-interference ability efficiently, a method by introducing new packets with BCH codes and interleaving to the Bluetooth 2.0+EDR specification is proposed. The packet properties of new packets are deduced based on the packet definition of Bluetooth specification. An analytical model of the throughput in different burst error cases is presented under the Gillbert-Elliott(GE) channel, the throughput of different packets in different burst error cases are obtained. The simulation result shows that adding new packets with BCH codes and interleaving to Bluetooth 2.0+EDR specification can improve the anti-interference ability and the data transmission throughput increases more than 100% in the higher burst errors channel.