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This work proposes a nonuniform sampling analog-to-digital converter (ADC) architecture that incorporates a reconfigurable digital anti-aliasing (AA) filter in the asynchronous digital domain. Considering applications where the signal frequency, bandwidth, or activity may significantly vary over time and operating conditions, it provides high flexibility, relaxes analog AA filter requirements, adapts...
A simple low-sampling-rate receiving scheme is proposed for W-band OFDM-RoF systems. Using the proposed preprocess, aliasing-free subcarriers can be received, and employing the optimized delays to ADCs can achieve the performance insensitive to sampling rate.
This paper focuses on resource allocation in relay-enhanced multicell networks with universal frequency reuse and the coexistence of different transmission modes, with the objective of maximizing the overall system throughput, subject to interference and noise impairments, and individual power constraints at both base stations and relay stations. To address the prohibitively high computational complexity...
In this paper, stochastic delay differential equation (SDDE) and its application on communications are discussed. Based on SDDE, a novel communication scheme-delay time modulation (DTM) is proposed. In this modulation scheme, the information signal is conveyed by the delay time of a delayed linear Langevin equation, which exhibits a linear relationship with the variance of the SDDE system output....
This paper investigates the allocation of subcarriers and power in the downlink channels of multiuser OFDM systems. The goal is to minimize the total transmit power under the constraints of user data rates and bit error rate (BER). We propose a sub-optimal algorithm to achieve the goal in this paper. We introduce a new factor which is the gain difference between the maximum and the next maximum userspsila...
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