JSAC
2008
13 years 11 months ago
2008
Recently, multicarrier modulation in the form of orthogonal frequency division multiplexing (OFDM) has been shown feasible for underwater acoustic communications via effective algo...
JSAC
2008
13 years 11 months ago
2008
JSAC
2008
13 years 11 months ago
2008
Abstract--The concept of cognitive radio (or secondary spectrum access) is currently under investigation as a promising paradigm to achieve efficient use of the frequency resource ...
JSAC
2008
13 years 11 months ago
2008
This paper investigates the joint iterative decoding of low-density parity-check (LDPC) codes and channels with memory. Sequences of irregular LDPC codes are presented that achieve...
JSAC
2008
13 years 11 months ago
2008
Interest in underwater acoustic networks has grown rapidly with the desire to monitor the large portion of the world covered by oceans. Fundamental differences between underwater a...
JSAC
2008
13 years 11 months ago
2008
Abstract-- We explore the performance and hardware complexity tradeoffs associated with performing iterative multipleinput multiple-output (MIMO) detection using a sphere decoder a...
JSAC
2008
13 years 11 months ago
2008
Abstract--In this paper, a vector-form factor graph representation is derived for intersymbol interference (ISI) channels. The resultant graphs have a tree-structure that avoids th...
JSAC
2008
13 years 11 months ago
2008
Abstract--Radio spectrum resource is of fundamental importance for wireless communication. Recent reports show that most available spectrum has been allocated. While some of the sp...
JSAC
2008
13 years 11 months ago
2008
In this paper, we address the challenges of content transfer in opportunistic networks, and propose techniques to better facilitate data dissemination based on the characteristics ...
JSAC
2008
13 years 11 months ago
2008
We propose the cross-layer based opportunistic multi-channel medium access control (MAC) protocols, which integrate the spectrum sensing at physical (PHY) layer with the packet sch...