Optimal modulation and coding for spatial multiplexing under flat fading channel.
Monika Jain,Sandeep Singh +1 more
TL;DR: Coding schemes can be used in link adaptation algorithms to improve data rates, effective use of allocated frequency spectrum and further to mitigate the effect of dynamic nature of the channel are used.
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Abstract: In spatial multiplexing i.e., multiple-input multiple-output (MIMO-OFDM) system, coding schemes can be employed in link adaptation algorithms to improve data rates, effective use of allocated frequency spectrum and further to mitigate the effect of dynamic nature of the channel are used. Coding schemes can be used in link adaptation algorithms (1). These loading algorithms adapt the system parameters according to the channel state information (CSI). It also improves the bit error rate (BER) performance and minimizes the total power input at the transmitter while maintaining a defined data-rate constraint. Ultimately, these algorithms gives better performance in the flat fading channel which will also be confirmed by simulation results.
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References
Optimal discrete bit loading for multicarrier modulation systems
J. Campello
- 16 Aug 1998
TL;DR: In this work, necessary and sufficient conditions for optimality are introduced along with algorithms for solving the discrete bit allocation problems for a general class of channels and can be used to construct efficient loading algorithms in practice.
276
On the Performance of Link Adaptation Techniques in MIMO Systems
TL;DR: This paper proposes and evaluates several link adaptation (LA) algorithms applied to the spatial multiplexing MIMO systems and shows that efficient use of the channel information could lead to a significant improvement in the system performance.
13
Performance of adaptive bit and power allocation MIMO-OFDM system based on greedy algorithm
Quoting Lai,Junxun Yin,Fan Lin,Huawen Yu +3 more
- 05 Dec 2005
TL;DR: The combination of orthogonal frequency-division multiplexed (OFDM), multi-input multi-output (MIMO) and adaptive modulation can effectively eliminate or resist various fading in wireless channels, thus it can improve the capacity of system and transmission quality.
10
Improved Chow Algorithm Used in Adaptive OFDM System
TL;DR: The optimal bit allocation method of multi-tone system: Campello allocation method is introduced, which is proved effective by simulation and used in both SISO OFDM system and MIMO OfDM system.
6
Adaptive bit and power loading algorithm with low complexity in MIMO-OFDM systems
TL;DR: In this article, two adaptive power and bit loading algorithms to maximize the throughput of MIMO-OFDM systems in frequency selective fading environment are proposed, and the two algorithms allocate bit based on maximizing the overall throughput.
6
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