orthogonal
RSS orthogonalImplementation of a MIMO OFDM Based Wireless LAN System
White Paper The combination of Multiple-Input Multiple-Output (MIMO) signal processing with Orthogonal Frequency Division Multiplexing (OFDM) is regarded as a promising solution for enhancing the data rates of next generation wireless communication systems... [10 Apr 2008]
Effective Throughput: A Unified Benchmark for Pilot-Aided OFDM/SDMA Wireless Communication Systems
White Paper This paper studies the uplink performance of an orthogonal frequency division multiplexing (OFDM) wireless system where multiple antennas are utilized at the base station (BS). Further, capacity can be greatly enhanced through spatial division... [10 Apr 2008]
Performance of Space-Combining Transmission Diversity With OFDM for Broadband Wireless Access Systems
White Paper This paper proposes a new diversity technique for broadband wireless access systems that uses orthogonal frequency division multiplexing (OFDM) and describes its performance. This technique consists of two components. [10 Apr 2008]
Spatial Multiplexing and Diversity Gain in OFDM-Based MIMO Systems
White Paper Multiple transmit and receive antennas can be used with orthogonal frequency division multiplexing to improve performance and transmission rate. This paper investigates trade offs between different techniques in broadband OFDM-based MIMO systems... [10 Apr 2008]
Performance Analysis of High QAM OFDM System Over Frequency Selective Time-Varying Fading Channel
White Paper This paper considers the performance degradation of a high QAM orthogonal frequency division multiplexing (OFDM) system over frequency selective time-varying fading channels. The time variation of the channel during one OFDM frame destroys the... [10 Apr 2008]
Adaptive Resource Allocation in Multiuser OFDM Systems With Proportional Fairness
White Paper Multiuser orthogonal frequency division multiplexing (MU-OFDM) is a promising technique for achieving high downlink capacities in future cellular and wireless LAN systems. The sum capacity of MU-OFDM is maximized when each subchannel is assigned to... [10 Apr 2008]
Multiuser OFDM Capacity Analysis With Partial Channel Information
White Paper This paper studies multiuser orthogonal frequency division multiplexing (OFDM) system using adaptive subchannel and power allocation with partial channel information. Previous research on multiuser OFDM includes margin adaptive (MA) optimization... [10 Apr 2008]
Low Cost Residual Phase Tracking Algorithm for OFDM-Based WLAN Systems
White Paper This paper presents the design of an efficient low complexity orthogonal frequency division multiplexing receiver targeting wireless local area networks. The focus is on mitigation of the residual frequency synchronization error and sampling... [10 Apr 2008]
Implementation of a MIMO OFDM-Based Wireless LAN System
White Paper The combination of multiple-input multiple-output (MIMO) signal processing with orthogonal frequency division multiplexing (OFDM) is regarded as a promising solution for enhancing the data rates of next-generation wireless communication systems... [10 Apr 2008]
OFDM for Mobile Data Communications
White Paper This paper describes Orthogonal Frequency Division Multiplexing (OFDM) and its application to mobile communications. OFDM is a modulation and multiple access technique that has been explored for over 20 years. [10 Apr 2008]
OFDM Versus Single Carrier With Cyclic Prefix: A System-Based Comparison
White Paper Most systems rely on the use of Orthogonal Frequency Division Multiplexing (OFDM) because of its capability to elegantly cope with multi-path interference. In recent years, wireless indoor networks have received a lot of scientific and industrial... [10 Apr 2008]
Constant Envelope Binary OFDM Phase Modulation
White Paper In this paper a new approach is presented to alleviate the undesirable effects due to the high peak-to-average power ratio of orthogonal frequency division multiplexing. A class of signaling called OFDM angle modulation is presented. [10 Apr 2008]
Reducing Peak-to-Average Ratios Using OFDM Necklaces
White Paper In communications systems using orthogonal frequency division multiplexing (OFDM), the Fourier transform of the data sequence is transmitted which leads to high peak-to-average power ratios creating implementational difficulties. [10 Apr 2008]
Real Time Implementation on FPGA of an OFDM Based Wireless LAN Modem Extended With Adaptive Loading
White Paper For wireless Local Area Network (LAN) the standards have chosen orthogonal frequency division multiplex (OFDM) as modulation scheme. Future wireless applications target multimedia and high-speed internet access, all requiring techniques to improve... [10 Apr 2008]
Cross-Layer Optimization of OFDM Systems for 4G Wireless Communications
White Paper As an example this paper refers to a system using multiple description coding at application layer combined with orthogonal frequency division multiplexing at the link level to provide robustness against hostile wireless channels. [10 Apr 2008]
