毫米波大规模MIMO-NOMA系统中基于动态子连接混合结构的预编码设计

doi:10.12305/j.issn.1001-506X.2021.12.36

Abstract

Abstract:

For the issues of the high hardware cost and power consumption in millimeter wave massive multiple input multiple output non-orthogonal multiple access (mMIMO-NOMA) systems, an efficient precoder design scheme, based on dynamically sub-connected hybrid architecture (DSC-HA) is proposed. Firstly, based on the user grouping, Kuhn-Munkras (KM) algorithm is used to match the channel state information of users in each NOMA cluster according to equivalent channel gain maximization criterion, so as to achieve dynamically antenna grouping, and then to complete the analog precoder design. After that, the digital precoder is designed with the equivalent channel of the strong user of each NOMA cluster to eliminate the inter-cluster interference. Finally, the power allocation of intra-cluster users of each NOMA cluster is optimized to reduce the inter-user interference. Simulation results show that the system sum rate of the DSC-HA scheme is not only better than that of the sub-connected hybrid architecture scheme, but also the energy efficiency is significantly higher than that of the fully-connected hybrid architecture-based and full digital architecture-based precoding schemes.

Key words: massive multiple input multiple output (mMIMO), millimeter wave, non-orthogonal multiple access (NOMA), hybrid precoder design, Kuhn-Munkras (KM) algorithm

CLC Number:

TN928

Xiaorong JING, Sisi ZHANG. Precoder design based on dynamically sub-connected hybrid architecture in millimeter wave massive MIMO-NOMA systems[J]. Systems Engineering and Electronics, 2021, 43(12): 3716-3724.

Figures/Tables 7

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References 21

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参数	取值
BS天线数	32≤N≤1 024
RF链数	M=8
用户数	K=30
APS分辨率	1≤B≤6
路径数	L=2

天线集合	取值
A₁	{44, 161, 5, 200, 239, 79, 241, 3, 202, 42, 163, 124, 120.237, 1, 40, 165, 126, 157, 245, 206, 77, 128, 116, 50, 208, 91, 52, 13, 24, 54, 228}
A₂	{83, 184, 189, 78, 88, 179, 73, 93, 199, 174, 68, 98, 204, 63, 209, 58, 108, 214, 53, 113, 219, 255, 149, 250, 229, 144, 33, 32, 138, 244, 129, 99}
A₃	{147, 122, 172, 197, 97, 222, 72, 247, 18, 22, 43, 251, 226, 118, 176, 151, 168, 6, 193, 101, 218, 76, 205, 35, 110, 135, 34, 31, 238, 131, 156, 242}
A₄	{230, 201, 17, 46, 143, 75, 85, 104, 56, 133, 27, 162, 191, 220, 249, 240, 211, 36, 153, 94, 95, 152, 181, 57, 192, 134, 171, 231, 115, 86, 183, 170}
A₅	{38, 243, 87, 194, 145, 96, 29, 185, 47, 252, 203, 154, 127, 2, 105, 225, 20, 212, 69, 167, 16, 11, 60, 109, 74, 25, 256, 100, 61, 190, 150, 186}
A₆	{114, 125, 136, 103, 92, 254, 158, 81, 169, 7, 70, 180, 59, 48, 221, 210, 37, 213, 51, 26, 188, 224, 62, 15, 4, 166, 246, 106, 117, 111, 90, 227}
A₇	{159, 234, 65, 84, 9, 140, 253, 215, 178, 28, 121, 196, 102, 8, 177, 216, 141, 66, 235, 233, 10, 160, 45, 195, 217, 142, 67, 82, 236, 49, 119, 137}
A₈	{55, 173, 232, 30, 198, 89, 139, 148, 80, 207, 21, 223, 64, 164, 123, 182, 248, 39, 130, 71, 12, 14, 155, 132, 107, 19, 23, 41, 146, 112, 175, 187}

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Precoder design based on dynamically sub-connected hybrid architecture in millimeter wave massive MIMO-NOMA systems

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