Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Hano Wang"'
Publikováno v:
IEEE Communications Letters. 21:2730-2733
This letter proposes a new sparse code multiple access (SCMA) system for handling the coexistence of active user equipments (UEs) and inactive UEs, which share the same frequency/time resources for an uplink grant-free scenario. SCMA systems use a me
Publikováno v:
VTC-Fall
Dynamic time division duplex (D-TDD) maximizes resource utilization by dynamically allocating resources to the downlink and uplink according to variations in traffic conditions. The new 5th generation (5G) mobile communication standard has reflected
Publikováno v:
VTC Spring
Ultra-dense small cell networks have been proposed as a way of addressing the explosive growth of data traffic. However, this approach often results in empty cells which only end up causing interference instead of serving UEs because they do not have
Publikováno v:
IEIE Transactions on Smart Processing and Computing. 3:275-284
This paper considers two-tier networks consisting of macrocells and femtocells operating in the same spectrum. This paper proposes a femtocell spectrum reuse scheme that determines the shared spectrum and transmit power for the femtocells to mitigate
Autor:
Jihoon Lee, Hano Wang
Publikováno v:
International Journal of Advancements in Computing Technology. 5:48-55
Publikováno v:
IEEE Transactions on Wireless Communications. 11:874-879
In this paper, we investigate a power allocation method without feedback of the instantaneous channel gain between a secondary transmitter (ST) and a primary receiver (PR) in spectrum sharing systems where channel information between the ST and the P
Publikováno v:
IEEE Transactions on Wireless Communications. 11:284-295
Conventional investigations on the capacity of a secondary link in spectrum sharing environments have assumed that a secondary user knows perfect channel information between the secondary transmitter and primary receiver. However, this channel inform
Publikováno v:
IEEE Transactions on Vehicular Technology. 60:4058-4063
Although cooperative spectrum sensing improves sensing accuracy in cognitive radio systems, additional reporting time is required to report the local test statistics until the existence of the primary user is verified, resulting in detection delay. T
Publikováno v:
IEEE Transactions on Wireless Communications. 10:390-395
This paper evaluates the outage probability of cognitive relay networks with cooperation between secondary users based on the underlay approach, while adhering to the interference constraint on the primary user, i.e., the limited amount of interferen
Throughput Analysis and Optimization of Sensing-Based Cognitive Radio Systems With Markovian Traffic
Publikováno v:
IEEE Transactions on Vehicular Technology. 59:4163-4169
This paper analyzes the secondary user throughput of a sensing-based cognitive radio system with Markovian traffic. Under the Markovian traffic assumption, imperfect packet capture, which occurs upon the random arrival of primary user packets, consid