A new maximum a posteriori (MAP) equalizer is proposed for digital radio links affected by large multipath delays. The “sparse” nature of the channel, where a few nonzero powerful taps are spaced by many negligible taps, is exploited to achieve a complexity proportional to the number of nonzero taps. When the channel is time-varying, an efficient nonlinear Kalman-like channel estimator is emplo...

One of the main reasons behind the concurrent increase in the demand for and congestion of Radio Frequency (RF) spectrum is the rapid development of radio networks of all kinds in our world, which has defiantly changed the public feeling about radio. Nowadays, almost everybody has a mobile phone and radio stations are literary everywhere. Someone can argue that our world is becoming a radio wor...

0163-6804/97/$10.00 © 1997 IEEE he trends in telecommunications are proceeding with a strong tendency toward increasing need for mobility in the access links within the network. Examples are: • Residential line access with the proliferation of cordless phones (their penetration rate has passed that of fixed phones in the United States, for instance) • Business lines with wireless private branch...

In the late 70's and the 80's global search techniques such as Genetic Algorithms (GA's), Simulated Annealing (SA), and Tabu Search (TS) were developed. These procedures are all adaptive, iterative, randomized heuristic searches that are guaranteed to locate the global optimum even in NP-hard combinatorial optimization problems. At about the same time, mobile radio communication systems (such a...

Center for Wireless Communications, University of California San Diego, 9500 Gilman Dr. La Jolla, CA 92093-0407, USA – fax: +1-619-534-2486 – e-mail: [email protected] Abstract— In this paper, we provide a general analytical framework for the computation of the interference statistics in mobile radio cellular systems. This approach, which takes into account log-normal shadowing, distance path ...

Multicell joint processing has originated from information-theoretic principles as a means of reaching the fundamental capacity limits of cellular networks. However, global multicell joint decoding is highly complex and in practice clusters of cooperating Base Stations constitute a more realistic scenario. In this direction, the mitigation of intercluster interference rises as a critical factor...

With the rapid growth of multimedia services, future generations of cellular communications require higher data rates and a more reliable transmission link while keeping satisfactory quality of service. In this respect, multiple input multiple-output (MIMO) antenna systems have been considered as an efficient approach to address these demands by offering significant multiplexing and diversity g...

Fig. 6: The values for throughput and delay presented here are normalized to 100% of a single superframe. Based on its demand a player can react on the opponents behavior and adapt its scheduling of transmission opportunities to maximize its payoff .. Fig. 8: Only neighbouring stations are in reception range. Since station 1 and station 4 have only one neighbour, it is more likely for them to g...

The field of wireless and mobile communication has a remarkable history that spans over a century of technology innovations from Marconi’s first transatlantic transmission in 1899 to the worldwide adoption of cellular mobile services by over four billion people today. Wireless has become one of the most pervasive core technology enablers for a diverse variety of computing and communications app...