TY - JOUR
T1 - Performance of dual-polarized MIMO for TD-HSPA evolution systems
AU - Peng, Mugen
AU - Zhang, Xiang
AU - Wang, Wenbo
AU - Chen, Hsiao Hwa
N1 - Funding Information:
Manuscript received September 26, 2010; revised March 30, 2011; accepted March 30, 2011. Date of publication June 23, 2011; date of current version August 24, 2011. This work was supported in part by the State Major Science and Technology Special Projects (Grant 2011ZX03003Ϣ002Ϣ01), Fok Ying Tong Education Foundation Application Research Projects (Grant 122005), the Program for New Century Excellent Talents in BUPT, and Taiwan National Science Council Grant NSC99Ϣ2221ϢEϢ006Ϣ016ϢMY3.
PY - 2011/9
Y1 - 2011/9
N2 - As the migration from code division multiple access (CDMA) to orthogonal frequency-division multiple access (OFDMA) involves a technological revolution in physical layer, the high speed packet access (HSPA) evolution (HSPA+) has been proposed for a smooth migration. HSPA+ is an effort to further improve radio performance of HSPA, and wideband CDMA (WCDMA) HSPA+ and time division-synchronous CDMA (TD-SCDMA) HSPA+ (TD-HSPA+) are two HSPA+ systems evolving from WCDMA and TD-SCDMA, respectively. Different from WCDMA HSPA+ system, TD-HSPA+ system utilizes eight antennas at Node B and two antennas at user equipment (UE) for 8 × 2 Multi-Input and Multi-Output (MIMO) transmission to achieve antenna array gain and diversity gain. Furthermore, to facilitate 8 × 2 MIMO configuration, the antenna elements are partitioned into two groups for dual-polarization transmissions. This paper focuses on 8 × 2 MIMO schemes in TD-HSPA+ systems, including the traditional single polarized MIMO (SP-MIMO), the separated and the joint singular value decomposition (SVD) based precoding dual-polarized MIMO (DP-MIMO) schemes. Performances of these TD-HSPA+ MIMO schemes are evaluated for both urban macro and micro scenarios. The simulation results show that the separated SVD based precoding DP-MIMO scheme performs better than the joint SVD based precoding DP-MIMO scheme, and the DP-MIMO scheme offers almost the same performance as the SP-MIMO due to the beamforming diversity gain and multiplex gain in TD-HSPA+ systems.
AB - As the migration from code division multiple access (CDMA) to orthogonal frequency-division multiple access (OFDMA) involves a technological revolution in physical layer, the high speed packet access (HSPA) evolution (HSPA+) has been proposed for a smooth migration. HSPA+ is an effort to further improve radio performance of HSPA, and wideband CDMA (WCDMA) HSPA+ and time division-synchronous CDMA (TD-SCDMA) HSPA+ (TD-HSPA+) are two HSPA+ systems evolving from WCDMA and TD-SCDMA, respectively. Different from WCDMA HSPA+ system, TD-HSPA+ system utilizes eight antennas at Node B and two antennas at user equipment (UE) for 8 × 2 Multi-Input and Multi-Output (MIMO) transmission to achieve antenna array gain and diversity gain. Furthermore, to facilitate 8 × 2 MIMO configuration, the antenna elements are partitioned into two groups for dual-polarization transmissions. This paper focuses on 8 × 2 MIMO schemes in TD-HSPA+ systems, including the traditional single polarized MIMO (SP-MIMO), the separated and the joint singular value decomposition (SVD) based precoding dual-polarized MIMO (DP-MIMO) schemes. Performances of these TD-HSPA+ MIMO schemes are evaluated for both urban macro and micro scenarios. The simulation results show that the separated SVD based precoding DP-MIMO scheme performs better than the joint SVD based precoding DP-MIMO scheme, and the DP-MIMO scheme offers almost the same performance as the SP-MIMO due to the beamforming diversity gain and multiplex gain in TD-HSPA+ systems.
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U2 - 10.1109/JSYST.2011.2158696
DO - 10.1109/JSYST.2011.2158696
M3 - Article
AN - SCOPUS:80052062100
VL - 5
SP - 406
EP - 416
JO - IEEE Systems Journal
JF - IEEE Systems Journal
SN - 1932-8184
IS - 3
M1 - 5928360
ER -