High speed packet access with parallel interference cancellation and high-order modulation for coded FDD CDMA communications

2002 ◽  
Author(s):  
Haifeng Wang ◽  
V. Haikola ◽  
J. Lilleberg
Keyword(s):  
Interference Cancellation ◽  
High Speed ◽  
High Order ◽  
Parallel Interference Cancellation ◽  
Packet Access ◽  
High Order Modulation

scholarly journals Penggelaran Teknologi HSPA+ di Indonesia

2017 ◽  
Vol 1 (2) ◽  
pp. 96 ◽  
Author(s):  
Rahmad Hidayat
Keyword(s):  
High Speed ◽  
Multiple Input Multiple Output ◽  
High Order ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Packet Access ◽  
High Order Modulation

Akses data kecepatan lebih tinggi melalui jalur nirkabel memungkinkan dilayani oleh teknologi High Speed Packet Access Evolved (HSPA+). HSPA+ mampu meningkatkan kemampuan broadband mobile dengan kecepatan data sampai 42 Mbps dengan latensi dan delay yang rendah . Kemampuan ini diperoleh dariadanya penambahan teknologi HOM (High Order Modulation), 2x2 MIMO(Multiple Input Multiple Output) dan DTX / DRX (Discontinuous Transmissionand Reception) pada platform WCDMA. HSPA+ merupakan evolusi HSPAyang memungkinkan peningkatan upgrade dengan biaya relatif lebih rendah.Tulisan ini akan mendeskripsikan spesifikasi teknologi HSPA+ dan peluangnyayang cukup besar untuk digelar bagi peningkatan infrastruktur Information andCommunication Technology (ICT) di Indonesia.

scholarly journals Chip-Level HARQ Chase Combining for HSUPA

2009 ◽  
Vol 2009 ◽  
pp. 1-4 ◽  
Author(s):  
Mohamed Et Tolba ◽  
Samir Saoudi ◽  
Raphaël Visoz ◽  
Tarik Ait-Idir
Keyword(s):  
High Speed ◽  
Space Time ◽  
High Order ◽  
Diversity Gain ◽  
Automatic Repeat Request ◽  
Time Diversity ◽  
Combining Efficiency ◽  
Time Linear ◽  
Chase Combining ◽  
High Order Modulation

Hybrid automatic repeat request (HARQ) is used in high-speed uplink packet access (HSUPA) to increase the data rate. Chase combining is the simplest of HARQ algorithms. It provides a time diversity and requires a small memory. In this paper, we propose a technique to increase the chase combining efficiency. In this method, HARQ transmissions are seen as additional receive antennas which are jointly combined at chip-level using a space-time linear minimum square error (LMMSE). We demonstrate that the chase combining diversity gain is considerably increased especially for high-order modulation.

scholarly journals Throughput Optimization in High Speed Downlink Packet Access (HSDPA)

2011 ◽  
Vol 10 (2) ◽  
pp. 474-483 ◽  
Author(s):  
Tao Cui ◽  
Feng Lu ◽  
Vignesh Sethuraman ◽  
Anil Goteti ◽  
Subramanya P. N. Rao ◽  
...  
Keyword(s):  
High Speed ◽  
Throughput Optimization ◽  
Packet Access
Sign in / Sign up

Export Citation Format

Share Document