Multi-beam Adaptive Beamforming Using a C-band Receiver Array and a Frequency-domain Digital Beamformer
نویسندگان
چکیده
This paper introduces a novel architecture of a multi-beam adaptive beamformer for SDMA (space division multiple access) applications. Combined with a 5.8 GHz eight-element RF front-end, digital beamforming performance using the proposed frequency-domain multi-beam beamformer is demonstrated in post processing. The DOA estimation based on the ESPRIT algorithm and simultaneous dual-beam forming results validate highly efficient multi-beam forming with highquality interference suppressions.
منابع مشابه
Space Time Processing for Third Generation CDMA Systems
The capacity of a cellular system is limited by two different phenomena, namely multipath fading and multiple access interference (MAI). A Two Dimensional (2-D) receiver combats both of these by processing the signal both in the spatial and temporal domain. An ideal 2-D receiver would perform joint space-time processing, but at the price of high computational complexity. In this dissertation we...
متن کاملAdaptive interference suppression for CDMA systems with a worst-case error criterion
designing FIR fan filters suitable for the multibeam forming network of the wideband beamspace adaptive array. Characteristics were approximated through the combination of spectral transformation and the window method so that those beam patterns that included the sidelobe characteristics of the resulting fan filters were virtually frequency independent. Using the fan filters designed by the pro...
متن کاملWideband Radar Adaptive Beamforming Using Frequency- Domain Derivative Based Updating
This paper details an advanced wideband adaptive beamforming algorithm for multi-channel radar systems that is currently in the process of being implemented in an FPGA. This approach models the entire frequency spectrum and linearly tracks statistical source covariance changes over frequency. achieved using a technique called derivative based updating (DBU). The novel aspect of this algorithm i...
متن کاملPerformance Analysis of Adaptive Beamforming Algorithms for Orthogonal Frequency Division Multiplexing System
Orthogonal Frequency Division Multiplexing (OFDM) is gaining popularity for high data rate communication systems. We propose the use of adaptive beamforming for interference rejection in OFDM systems, due to its advantages over equalization. An adaptive beamformer uses the concept of spatial filtering to direct the antenna beam towards the desired signal/transmitter and place a null towards the...
متن کاملBeamforming and Angle-of-Arrival Estimation of Square Planar Antenna Array
This paper presents a dual-band planar antenna array for ISM band applications (2.4 GHz and 2.45 GHz). This antenna is proposed for indoor applications and enables adaptive beamforming and angle of arrival (AOA) estimation. An adaptive beamforming algorithm is applied for a planar antenna array, which is able to steer its main beam and nulls in azimuth and elevation planes over a wide frequency...
متن کامل