Scheduling of multi-antenna broadcast systems with heterogeneous users
نویسندگان
چکیده
منابع مشابه
Dropping Users in a Multi-Antenna Broadcast Channel
We analyze the sensitivity of the capacity of a multi-antenna multi-user system to the number of users being served simultaneously. We show analytically that the capacity loss of serving fewer users at low SNR is much smaller than at high SNR. The advantages of serving fewer users are many: multi-user algorithms often have better performance, lower complexity, and reduced channel-knowledge requ...
متن کاملBroadcast scheduling for Push broadcast systems with arbitrary cost functions
In this report, the problem of broadcast scheduling in Push broadcast systems is studied. We introduce an optimization approach that leads to well justified policies for Push broadcast systems with generalized cost functions. In particular, we apply our results to a Push broadcast system with different deadlines associated to the files while allowing the files to have unequal demand rates and l...
متن کاملMulti-Antenna Broadcast Channels with Limited Feedback and User Selection
We analyze the sum-rate performance of a multi-antenna downlink system carrying more users than transmit antennas, with partial channel knowledge at the transmitter due to finite rate feedback. In order to exploit multiuser diversity, we show that the transmitter must have, in addition to directional information, information regarding the quality of each channel. Such information should reflect...
متن کاملThree schemes for wireless coded broadcast to heterogeneous users
We study and compare three coded schemes for single-server wireless broadcast of multiple description coded content to heterogeneous users. The users (sink nodes) demand different number of descriptions over links with different packet loss rates. The three coded schemes are based on the LT codes, growth codes, and randomized chunked codes. The schemes are compared on the basis of the total num...
متن کاملLucky Scheduling for Energy-Efficient Heterogeneous Multi-Core Systems
Heterogeneous multi-core processors with big/highperformance and small/low-power cores have been proposed as an alternative design to improve energy efficiency over traditional homogeneous multi-cores. We make the case for proportional-share scheduling of threads in heterogeneous processor cores aimed at improving combined energy efficiency and performance. Our thread scheduling algorithm, luck...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Journal on Selected Areas in Communications
سال: 2007
ISSN: 0733-8716
DOI: 10.1109/jsac.2007.070915