如果采用现有认知无线电系统方案, 那么认知用户(cognitive user, CU) 使用电视频带会面临
电视信号干扰问题. 为此, 提出一种基于原模图LDPC 码的电视频带认知无线电系统干扰抑制 …

In this paper we proposed a cooperative MIMO cognitive network scheme. This scheme is
composed of multiple source node users and multiple relay node users. Based on …

Cognitive radio (CR) technology is considered to be an effective solution to allocate
spectrum resources, whereas the primary users of a network do not fully utilize available …

The existing cognitive radio networks (CRNs) lack the ability to deal with the electronic
attack of malicious users, which can destroy the normal communication of the cognitive …

In the cable television covered area, the CUs (cognitive users) will face the problem of TV
signals interference in TV band; it means the CU cannot effectively utilize the spectrum hole …

The existing cognitive radio (CR) systems lack the ability to deal with the attack of a
pretended primary user (PPU), which can palsy cognitive network. To solve the problem, in …

The existing cognitive network can't work together with licensed (primary) users' network at
the same frequency-time domain, and secondary users (SUs) of cognitive network only wait …

To enable mobile stations (MSs) of secondary users (SUs) in cognitive radio (CR) networks
sharing a common channel with MSs of primary users (PUs) is an important but challenging …

Interference alignment and cancelation (IAC) is a new approach for decoding concurrent
transmitter-receiver pairs in MIMO networks. Recent studies on IAC system are focus on the …

Though various cognitive radio schemes have been developed, they have not considered
the problem of co-channel interference for cognitive users (CU) and primary user (PU) to …