multiple systems orthogonal
Synchronization in Interleaved OFDMA Systems
White Paper Orthogonal Frequency Division Multiple Access (OFDMA) as a new multiple access technology has received a lot of attention. The estimation of carrier frequency offset in the uplink of OFDMA system is extremely challenging due to the nature of... [03 Jul 2008]
Complexity makes travellers miss their connection
Comment In the not too distant future, you will be able to add 3G Long Term Evolution (LTE), mobile WiMax, multiple in multiple out (MiMo) and orthogonal frequency division multiplexing (OFDM) to the mix. O is for Operating systems [12 Jun 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]
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. Only recently has it been finding its way into commercial communications systems, as Moore’s Law has driven down the cost of the... [10 Apr 2008]
Interpolation Based Unitary Precoding for Spatial Multiplexing MIMO-OFDM With Limited Feedback
White Paper Spatial multiplexing with linear precoding is a simple technique to take advantage of the high spectral efficiency provided by multiple-input multiple-output (MIMO) systems, and it can be simply implemented over frequency selective channels by... [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]
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]
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]
Analysis of the Influence of Phase Noise in MIMO OFDM Based WLAN Systems
White Paper The influence of phase noise (PN) on the performance of a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) based communication system is analyzed. A PN power weighting function is derived which indicates the... [10 Apr 2008]
Design of Networking Protocols for Shallow Water Peer-to-Peer Acoustic Networks
White Paper In such an environment, orthogonal modulation schemes could provide a solution for multiple simultaneous acoustic links. As an alternative to orthogonal schemes, random shared access technology has proven successful in many wireless networks. [08 Jan 2008]
Rapid MIMO-OFDM Software Defined Radio System Prototyping
White Paper Combining MIMO with Orthogonal Frequency Division Multiplexing (OFDM), it is possible to significantly reduce receiver complexity as OFDM greatly simplifies equalization at the receiver. Multiple Input-Multiple Output (MIMO) is an attractive... [31 Aug 2007]
Adaptation of Multiple Access Parameters in Time Hopping UWB Cluster Based Wireless Sensor Networks
White Paper First, an orthogonal time hopping sequence construction is proposed for synchronous communications (downlink), where the number of pulses per symbol is adjusted to meet the bit error rate requirement of an application. [23 Aug 2007]
Rapid MIMO-OFDM Software Defined Radio System Prototyping
White Paper Combining MIMO with Orthogonal Frequency Division Multiplexing (OFDM), it is possible to significantly reduce receiver complexity as OFDM greatly simplifies equalization at the receiver. Multiple Input-Multiple Output (MIMO) is an attractive... [10 Aug 2007]
Throughput Enhancement for Wireless Communication Systems Using the Multiple Antenna Technique MIMO
White Paper A promising way to achieve this is the combination of Multiple-Input Multiple-Output (MIMO) signal processing with Orthogonal Frequency Division Multiplexing (OFDM). One of the main goals in developing next generation wireless communication systems... [08 Aug 2007]
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