Secure Collision-Free Frequency Hopping for OFDMA-Based Wireless Networks (2009)
Leonard Lightfoot, Lei Zhang, Jian Ren, Tongtong Li
This paper considers highly efficient antijamming system design using secure dynamic spectrum access control. First, we propose a collision-free frequency hopping (CFFH) system based on the OFDMA...
Secure Collision-Free Frequency Hopping for OFDMA-Based Wireless Networks (2009)
Leonard Lightfoot, Lei Zhang, Jian Ren, Tongtong Li
This paper considers highly efficient antijamming system design using secure dynamic spectrum access control. First, we propose a collision-free frequency hopping (CFFH) system based on the OFDMA...
Jitendra K. Tugnait, Hui Liu, Guang Gong, Tongtong Li, Jitendra K. Tugnait, Hui Liu, ...
open access articles distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly...
A Topology-Aware Routing Protocol for the MANET with Multiple Sinks (2008)
Huahui Wang, Zhiwei Cen, Tongtong Li, Matt Mutka
Abstract — In this paper, a topology-aware routing protocol is developed for the mobile ad-hoc networks (MANET) with multiple fixed base stations (BSes). The protocol aims at delivering packets...
Transmit Delay Structure Design for Blind Channel Estimation over Multipath Channels (2007)
Tongtong Li, Qi Ling, Zhi Ding
Wireless communications often exploit guard intervals between data blocks to reduce interblock interference in frequency-selective fading channels. Here we propose a dual-branch transmission scheme...
Physical Layer Built-In Security Analysis and Enhancement Algorithms for CDMA Systems (2007)
Tongtong Li, Qi Ling, Jian Ren
Historically developed for secure communication and military use, CDMA has been identified as a major modulation and multiple-access technique for 3G systems and beyond. In addition to the wide...
Physical Layer Built-In Security Analysis and Enhancement Algorithms for CDMA Systems (2007)
Tongtong Li, Qi Ling, Jian Ren
Historically developed for secure communication and military use, CDMA has been identified as a major modulation and multiple-access technique for 3G systems and beyond. In addition to the wide...
Transmit Delay Structure Design for Blind Channel Estimation over Multipath Channels (2007)
Tongtong Li, Qi Ling, Zhi Ding
Wireless communications often exploit guard intervals between data blocks to reduce interblock interference in frequency-selective fading channels. Here we propose a dual-branch transmission scheme...
Physical layer built-in security analysis and enhancement of CDMA systems (2005)
Tongtong Li, Jian Ren, Qi Ling, Weiguo Liang
Abstract — Historically developed for secure communication and military use, CDMA is now serving as one of the most widely used wireless airlink interface and has been identified as a major...
Tongtong Li, Weiguo Liang, Zhi Ding, Jitendra K. Tugnait
We consider blind channel identification and signal separation in long-code CDMA systems. First, by modeling the received signals as cyclostationary processes with modulation-induced...
Blind asynchronous multiuser CDMA receivers for ISI Channels using code-aided CMA (2000)
Jitendra K. Tugnait, Tongtong Li, Student Member
Abstract—A code-aided constant modulus algorithm (CMA) based approach is presented for blind detection of asynchronous short-code DS-CDMA (direct sequence code division multiple access) signals in...
A Reduced-State Viterbi Algorithm for Blind Sequence Estimation of DPSK Sources (1999)
The Viterbi algorithm is the optimum decoding algorithm for convolutional codes and has often served as a standard technique in digital communication systems for maximum likelihood sequence...