Bit Allocation Laws for Multiantenna Channel Feedback Quantization: Multiuser Case
نویسندگان
چکیده
منابع مشابه
Bit Allocation Laws for Multi-Antenna Channel Quantization: Multi-User Case
This paper addresses the optimal design of limitedfeedback multi-user spatial multiplexing systems. A base station with M antennas is considered serving M single-antenna users, which share a common feedback link with a total rate of B bits per fading block. The optimization problem is cast in form of minimizing the average transmission power at the base station subject to users’ outage probabil...
متن کاملMultiantenna Cellular Communications : Channel Estimation, Feedback, and Resource Allocation
The use of multiple antennas at base stations and user devices is a key component in the design of cellular communication systems that can meet the capacity demands of tomorrow. The downlink transmission from base stations to users is particularly limiting, both from a theoretical and a practical perspective, since user devices should be simple and power-efficient, and because many applications...
متن کاملAdaptive Subcarrier Allocation and Bit Loading for Multiuser OFDM Systems
This paper proposes a new algorithm of adaptive subcarrier allocation and bit loading for simultaneous voice and data transmission in multiuser OFDM systems. The algorithm dynamically assigns the number of subcarriers and bits/per symbol on each subcarrier for each user in a single cell. To cope with the stringent delay requirement of voice service, the subcarriers with low channel gains are as...
متن کاملSoft multiuser decoding for vector quantization over a CDMA channel
An approach to optimal soft decoding for vector quantization (VQ) over a code-division multiple-access (CDMA) channel is presented. The decoder of the system is soft in the sense that the unquantized outputs of the matched filters are utilized directly for decoding (no decisions are taken), and optimal according to the minimum mean-squared error (MMSE) criterion. The derived decoder utilizes a ...
متن کاملMultiuser OFDM with adaptive subcarrier, bit, and power allocation
Multiuser orthogonal frequency division multiplexing (OFDM) with adaptive multiuser subcarrier allocation and adaptive modulation is considered. Assuming knowledge of the instantaneous channel gains for all users, we propose a multiuser OFDM subcarrier, bit, and power allocation algorithm to minimize the total transmit power. This is done by assigning each user a set of subcarriers and by deter...
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 Transactions on Signal Processing
سال: 2012
ISSN: 1053-587X,1941-0476
DOI: 10.1109/tsp.2011.2169250