Abstract: This paper presents a channel estimator based on multi-core platform for Long Term Evolution(LTE) downlink. This design partitions task into various sub tasks, and then maps subtasks onto 13 different cores by the relative inter-core communication traffic. The integration usage of shared memory and NoC message transfer are 2 ways for inter-core communication, as to realize multi-core collaborative work. By using the extended register file, SIMD data path characteristics and balanced single core computation load. Performance analysis result shows that this channel estimator can achieve a throughput of 678 Mb/s.

Key words: channel estimator, multi-core processor, Long Term Evolution(LTE), inter-core communication, parallel computation, multi-core memory access strategy

摘要： 设计一种基于多核平台的长期演进下行链路信道估计器。对任务进行划分，分解为多个子任务，根据子任务之间的相对通信量，将子任务映射至13个处理器核上，综合运用共享内存及NoC消息传递2种方式进行核间通信，实现多核协同工作，并使用扩展的寄存器堆文件、SIMD数据通路特性、平衡单核计算负载量等方式优化设计。性能分析结果表明，该信道估计器可达到678 Mb/s的吞吐率。

关键词: 信道估计器, 多核处理器, 长期演进, 核间通信, 并行计算, 多核访存策略

CLC Number: 

• TP393