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Your search keyword '"Yindi Jing"' showing total 107 results
Start Over Author "Yindi Jing" Publication Type Academic Journals
107 results on '"Yindi Jing"'

2. Spectral Efficiency of Mixed-ADC Receivers for Massive MIMO Systems

Author

Weiqiang Tan, Shi Jin, Chao-Kai Wen, and Yindi Jing

Subjects
Massive MIMO, low-resolution ADC, mixed-ADC receiver, spectral efficiency, maximum-ratio combining detector, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

This paper investigates the uplink of multi-user massive multi-input multioutput (MIMO) systems with a mixed analog-to-digital converter (ADC) receiver architecture, in which some antennas are equipped with costly full-resolution ADCs and others with less expensive low-resolution ADCs. A closed-form approximation of the achievable spectral efficiency (SE) with the maximum-ratio combining detector is derived. Based on this approximated result, the effects of the number of base station (BS) antennas, the transmit power, the proportion of full-resolution ADCs in the mixed-ADC structure, and the number of quantization bits of the low-resolution ADCs are revealed. Results show case that the achievable SE increases with the number of BS antennas and quantization bits, and it converges to a saturated value in the high user power regime or the full ADC resolution case. Most important, this work efficiency verifies that for a massive MIMO, the mixed-ADC receiver with a small fraction of full-resolution ADCs can have comparable SE performance with the receiver with all full-resolution ADCs but at a considerably lower hardware cost.

Published
2016
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9. Diversity Analysis of Distributed Space-Time Codes in Relay Networks with Multiple Transmit/Receive Antennas

Author

Babak Hassibi and Yindi Jing

Subjects
Telecommunication, TK5101-6720, Electronics, TK7800-8360
Abstract

The idea of space-time coding devised for multiple-antenna systems is applied to the problem of communication over a wireless relay network, a strategy called distributed space-time coding, to achieve the cooperative diversity provided by antennas of the relay nodes. In this paper, we extend the idea of distributed space-time coding to wireless relay networks with multiple-antenna nodes and fading channels. We show that for a wireless relay network with M antennas at the transmit node, N antennas at the receive node, and a total of ℛ antennas at all the relay nodes, provided that the coherence interval is long enough, the high SNR pairwise error probability (PEP) behaves as (1/P)min{M,N}ℛ if M≠N and (log1/MP/P)ℳℛ if M=N, where P is the total power consumed by the network. Therefore, for the case of M≠N, distributed space-time coding achieves the maximal diversity. For the case of M=N, the penalty is a factor of log1/MP which, compared to P, becomes negligible when P is very high.

Published
2008
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