This paper mainly presents Access Point s’ (APs’) performance and co-channel, adjacent channel interference according to 802.11g standard. Firstly, our study illustrates the performance of one AP, including its coverage performance, load-carrying properties and fairness. Next we propose the details about co-channel, adjacent channel interference which should be paid attention to in deploying ne...

In this paper coexistence and spectrum sharing between systems as a recently critical issue due to emerging new wireless technologies and spectrum scarcity are investigated. At World Radiocommunication Conferences 2007 (WRC-07), International Telecommunication Union Radiocommunications (ITU-R) allocated 3400-3600 MHz band for the coming fourth generation (4G) or IMT-Advanced on a co-primary bas...

With improvement of the automation level, wireless sensors are widely used, but various kinds of interference lead to problems in the application. In order to deal with co-channel interference, a throughput efficient scheme based on Extended Binary Phase Shift Keying (EBPSK) modulation is introduced in physical layer. On this basis, the corresponding transmission scheme and the important impact...

Wtdeband code -dzvzsion multiple access (CD MA) systems are interference-limzted, and so must utilize some form of interference reductzon in order to maintain an acceptable qualtty of service and capacity. In this paper, cochannel interference for several different CDMA architectures is evaluated. For wideband CDMA systems such as WCDMA and cdma2000 with carrier st ealing, co-channel ~nterferen...

In accordance with the Costa theorem, the interference which is independent of the channel input and known non-causally at the transmitter, does not affect the capacity of the Gaussian channel. In some applications, the known interference depends on the input and hence has some information. In this paper, we study the channel with input dependent interference and prove a capacity theorem that n...

This paper gives the interference theoretical analysis, under the co-site and co-antenna of the CDMA2000 1x and CDMA2000 1xEV-DO system. The results show that the reverse capacity will be reduced by 4.8%, and the system with the bilateral adjacent channel interference will be reduced by 9.2% under the co-site and co-antenna system. If the impact of the adjacent channel interference for coverage...

In this paper we investigate the sub-channel assignment and power control to maximize the total sum rate in the uplink of two-cell network. It is assumed that there are some sub-channels in each cell which should be allocated among some users. Also, each user is subjected to a power constraint. The underlying problem is a non-convex mixed integer non-linear optimization problem which does not h...

Terahertz (THz) wireless technology is envisioned to enable terabit-per-second (Tbps) and secure transmissions in sixth-generation (6G) communication networks has attracted attention from academia industry recent years. Because the transmission range of THz radios restricted compared that microwave radios, frequency reuses band become much more flexible even possible among transceiver pairs clo...