# [1]何春龙,尤肖虎,朱鹏程,等.基于波束成形的MIMO-OFDM插值算法[J].东南大学学报(自然科学版),2011,41(5):897-902.[doi:10.3969/j.issn.1001-0505.2011.05.001] 　He Chunlong,You Xiaohu,Zhu Pengcheng,et al.Interpolation algorithms based on beamforming for MIMO-OFDM[J].Journal of Southeast University (Natural Science Edition),2011,41(5):897-902.[doi:10.3969/j.issn.1001-0505.2011.05.001] 点击复制 基于波束成形的MIMO-OFDM插值算法() 分享到： var jiathis_config = { data_track_clickback: true };

41

2011年第5期

897-902

2011-09-20

## 文章信息/Info

Title:
Interpolation algorithms based on beamforming for MIMO-OFDM

(东南大学移动通信国家重点实验室, 南京 210096)
Author(s):
(National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China)

Keywords:

TN911
DOI:
10.3969/j.issn.1001-0505.2011.05.001

Abstract:
The linear spherical interpolation algorithm based on beamforming for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems has large complexity and it can only be applied to unquantized beamforming. Therefore, a general spherical interpolation method is proposed. This method feeds back pilot subcarrier beamforming vectors to the transmitter; then using the channel correlation in the frequency domain, the beamforming vectors for non-pilot subcarriers are reconstructed according to that of the two neighboring pilot subcarriers using the general spherical interpolation algorithm. So the general spherical interpolation method can decrease the feedback overhead caused by the beamforming vectors on every subcarrier. Furthermore, considering the realization of the actual system, a phase quantization method is proposed. Simulation results show that the general spherical interpolation algorithm is applicable for both unquantized beamforming and quantized beamforming. And the bit error rate (BER) performance of the phase quantization method outperforms existing MIMO-OFDM beamforming interpolation algorithms, and is easy to realize in actual systems.

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