Codebook Design for Millimeter-Wave Channel Estimation With Hybrid Precoding Structure

In this paper, we study hierarchical codebook design for channel estimation in millimeter-wave (mmWave) communications with a hybrid precoding structure. Due to the limited saturation power of the mmWave power amplifier, we consider the per-antenna power constraint (PAPC). We first propose a metric,...

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Vydané v:IEEE transactions on wireless communications Ročník 16; číslo 1; s. 141 - 153
Hlavní autori: Xiao, Zhenyu, Xia, Pengfei, Xia, Xiang-Gen
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: IEEE 01.01.2017
Predmet:
Antennas
Channel estimation
codebook design
Economic indicators
hierarchial search
hybrid precoding
Measurement
Millimeter wave
mmWave
mmWave beamforming
mmWave precoding
Precoding
Radio frequency
Wireless communication
ISSN:1536-1276
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Shrnutí:In this paper, we study hierarchical codebook design for channel estimation in millimeter-wave (mmWave) communications with a hybrid precoding structure. Due to the limited saturation power of the mmWave power amplifier, we consider the per-antenna power constraint (PAPC). We first propose a metric, termed generalized detection probability (GDP), to evaluate the quality of an arbitrary codeword. This metric not only enables an optimization approach for mmWave codebook design, but also can be used to compare the performance of two different codewords/codebooks. To the best of our knowledge, GDP is the first such metric, particularly for mmWave codebook design. We then propose a heuristic approach to design a hierarchical codebook exploiting beam widening with the multi-RF-chain sub-array (BMW-MS) technique. To obtain crucial parameters of BMW-MS, we provide two solutions, namely, a low-complexity search (LCS) solution to optimize the GDP metric and a closed-form (CF) solution to pursue a flat beam pattern. Performance comparisons show that BMW-MS/LCS and BMW-MS/CF achieve very close performances, and they outperform the existing alternatives under the PAPC.
ISSN:1536-1276
DOI:10.1109/TWC.2016.2619705