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TWC
2008
86views more  TWC 2008»
9 years 11 months ago
On the Spectral Efficiency of CDMA Downlink Cellular Mobile Networks
A new accurate mathematical analysis is presented for the efficient computation of the spectral efficiency of CDMA downlink wireless communication systems in the presence of multip...
Khairi Ashour Hamdi, Pongsatorn Sedtheetorn
TWC
2008
112views more  TWC 2008»
9 years 11 months ago
Modeling power saving for GAN and UMTS interworking
3GPP 43.318 specifies the Generic Access Network (GAN) for interworking between Wireless Local Area Network (WLAN) and Universal Mobile Telecommunications System (UMTS) core netwo...
Shun-Ren Yang, Phone Lin, Pei-tang Huang
TWC
2008
126views more  TWC 2008»
9 years 11 months ago
Quadratic forms in normal RVs: theory and applications to OSTBC over hoyt fading channels
In this paper, the statistics of quadratic forms in normal random variables (RVs) are studied and their impact on performance analysis of wireless communication systems is explored...
George A. Ropokis, Athanasios A. Rontogiannis, P. ...
TWC
2008
150views more  TWC 2008»
9 years 11 months ago
Design and analysis of post-coded OFDM systems
This paper discusses the design and analysis of post coded OFDM (PC-OFDM) systems. Coded or precoded OFDM systems are generally employed to overcome the symbol recovery problem in...
S. F. A. Shah, Ahmed H. Tewfik
TWC
2008
109views more  TWC 2008»
9 years 11 months ago
Semi-Blind Adaptive Spatial Equalization for MIMO Systems with High-Order QAM Signalling
This contribution investigates semi-blind adaptive spatial filtering or equalisation for multiple-input multiple-output (MIMO) systems that employ high-throughput quadrature amplit...
Sheng Chen, Wang Yao, Lajos Hanzo
TWC
2008
139views more  TWC 2008»
9 years 11 months ago
Optimal and Suboptimal Power Allocation Schemes for OFDM-based Cognitive Radio Systems
In this paper, we investigate an optimal power loading algorithm for an OFDM-based cognitive radio (CR) system. The downlink transmission capacity of the CR user is thereby maximiz...
Gaurav Bansal, Md. Jahangir Hossain, Vijay K. Bhar...
TWC
2008
132views more  TWC 2008»
9 years 11 months ago
Asymptotic BER analysis of threshold digital relaying schemes in cooperative wireless systems
Threshold relaying is an effective technique to achieve cooperative diversity in uncoded cooperative wireless networks, which suffer from error propagation due to detection errors...
Furuzan Atay Onat, Yijia Fan, Halim Yanikomeroglu,...
TWC
2008
98views more  TWC 2008»
9 years 11 months ago
On bandwidth request mechanism with piggyback in fixed IEEE 802.16 networks
This paper investigates the random channel access mechanism specified in the IEEE 802.16 standard for the uplink traffic in a Point-to-MultiPoint (PMP) network architecture. An ana...
Jianhua He, Kun Yang, Ken Guild, Hsiao-Hwa Chen
TWC
2008
225views more  TWC 2008»
9 years 11 months ago
Joint rate and power allocation for cognitive radios in dynamic spectrum access environment
Abstract--We investigate the dynamic spectrum sharing problem among primary and secondary users in a cognitive radio network. We consider the scenario where primary users exhibit o...
Dong In Kim, Long Le, Ekram Hossain
TWC
2008
125views more  TWC 2008»
9 years 11 months ago
Packet level performance analysis in wireless user-relaying networks
In this paper, the impact of user relaying on the behavior of a relay node, which acts as the source node at the same time, is analyzed in a wireless relay network at the packet le...
Jun Cai, Attahiru Sule Alfa, Pinyi Ren, Xuemin She...
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