A Wideband Receiver with Adaptive Strong Interference Suppression
نویسندگان
چکیده
In this paper, a wideband receiver with high dynamic range is proposed. At the front end of the proposed receiver, a sensing waveform is used to sense the input signal. And by adjusting the sensing waveform so as to project the interference to zero, the receiver can eliminate the strong interference signal adaptively before sampling. Both the theoretic analysis and simulation show that this method can suppress the interference signal effectively and improve the sampling accuracy of the weak desired signal when the instantaneous dynamic range of the input signal is larger than the dynamic range of the ADC’s quantizer. Copyright © 2013 IFSA.
منابع مشابه
Interference Cancellation Schemes in UWB Systems used in Wireless Personal Area Network based on Wavelet based Pulse Spectral shaping and Transmitted Reference UWB using AWGN Channel Model
For high data rate ultra wideband communication system, performance study of mutual interference such as suppression of interference signal by performing pulse shaping from UWB to other narrowband system using wavelet technique and reduction of interference from other narrowband system to UWB system in conjunction with Transmitted-Reference (TR-UWB) signaling scheme with adaptive receivers is a...
متن کاملAdaptive channel equalization in WCDMA downlink in soft handover
Receivers based on channel equalization have proven to be one of the most promising candidates for terminal receivers in wideband code-division multiple-access (WCDMA) downlink. The channel equalizers provide multiple access interference (MAI) suppression, and thus ensure adequate receiver performance even with a high number of active users. However, the suitability of the equalizers to soft ha...
متن کاملEnhanced Blind Adaptive Narrowband Interference Suppression in DSSS
This paper addresses blind adaptive suppression of a digital narrowband interferer in direct sequence spread spectrum (DSSS) communications.. We apply an adaptive suppression method for wideband interference proposed by Honig, Madhow and Verdd [1] to a narrowband interferer. We identify the eigenspaces of the system dynamics to: 1) significantly decrease convergence times via a new constraint o...
متن کاملOn the Design of Robust Multiband Ofdm Ultra-wideband Receivers
This paper analyzes the effects of narrowband interferences (NBI) on the performance of a multi-band orthogonal frequency division multiplexing (MB-OFDM) Ultra-wideband (UWB) receiver and proposes efficient schemes for signal reception and extraction of information in the presence of NBI. A study to assess the effects of NBI on the quantization noise in the analog to digital converter (ADC) is ...
متن کاملBlind Adaptive Reduced-Rank Detectors for DS-UWB Systems Based on Joint Iterative Optimization and the Constrained Constant Modulus Criterion
A novel linear blind adaptive receiver based on joint iterative optimization (JIO) and the constrained constant modulus (CCM) design criterion is proposed for interference suppression in direct-sequence ultra-wideband (DS-UWB) systems. The proposed blind receiver consists of two parts, a transformation matrix that performs dimensionality reduction and a reduced-rank filter that produces the out...
متن کامل