中文摘要：

论文提出了一种基于VBLAST—OFDM系统的平行循环迭代QR分解检测算法，称为P-IQRD算法。该算法主要克服循环迭代QR分解算法最先检测层性能差的缺点，将平行算法的思想引入到循环迭代QR分解算法中，进一步抑制了误码传播现象，有效提高了系统的检测性能。仿真结果表明，文中提出的P-IQRO算法比循环迭代QR分解算法、传统的平行算法、QR算法和迫零算法在误码性能上要好。

英文摘要：

A novel parallel iterative cyclic QR decomposition detection algorithm based on VBLAST-OFDM system is proposed in this paper. In order to overcome the disadvantage of the poor performance for the first detected layer in IQRD algorithm, the parallel detection is applied to the IQRD algorithm, thus the error propagation is further suppressed and the performance is effectively improved. Simulation results show that the proposed P-IQRD algorithm is superior to the IQRD algorithm, the conventional parallel algorithm, the ZF algorithm and the OR decomposition algorithm.