US7142610 Jun 17, 2003 Nov 28, 2006 The Aerospace Corporation M-Ary quadrature amplitude modulation (QAM) bit-boundary turbo coded systemUS7142610 2003年6月17日 2006年11月28日 The Aerospace Corporation M-Ary quadrature amplitude modulation (QAM) bit-boundary turbo coded system...
M-ary modulation schemes are preferred because inthese schemes more than one bit can be grouped transmit at a time which is very effective for band limited channels. MQAM (M-ary Quadrature Amplitude Modulation) is the most effective digitalmodulation technique as it is more power efficient for ...
A rate-distortion optimized wireless video streaming algorithm was developed which considers the allocation of multiple quadrature amplitude modulation(M-QAM) sub-channels,the number of scalable video layers,and the channel coding protection priorities for various layers. 在满足信道传输速率的约束条件下,...
We assume that each user employs spectrally efficient M-ary quadrature amplitude modulation and undergoes independent Rayleigh fading. We study the performance of linear minimum mean-squared error receivers in situations where: i) the channels of all users are known perfectly; ii) the receiver knows...
quadrature amplitude modulationrandom sequences/ m-ary systems simulationIt has been generally assumed that binary data from a maximum-length pseudo-random binary source can be grouped into m-ary symbols that will uniformly cover constellation points in a modulation scheme due to the central limit ...
The types of modulation included in this study are M-ary phase shift keying (PSK) and M-ary quadrature amplitude modulation (QAM). Assuming a wireless channel with additive white Gaussian noise and gray coding for bit assignment, the BER expressions for M-ary PSK and M-ary QAM are as foll...
Sign up with one click: Facebook Twitter Google Share on Facebook MQPR (redirected fromM-Ary Quadrature Partial Response) AcronymDefinition Copyright 1988-2018AcronymFinder.com, All rights reserved. Suggest new definition Want to thank TFD for its existence?Tell a friend about us, add a link t...
256-QAM (quadrature amplitude modulation). In this paper we consider whether the bandwidth efficiency of high-level QAM can be used to overcome the bandwidth inefficiency of CDMA. A mathematical model is built to compare cellular capacity obtained with and without MQAM-CDMA use. It is seen that...
Adaptive M-QAM (M-ary quadrature amplitude modulation) method for joint power allocation based on DF(Decode-Forward) relay protocol Lagrange multipliers ; at suboptimal power allocation, the source node selects meets the system requirements for the maximum symbol error rate M-QAM ... 陈勇,何晨,...
5) orthogonal multicode modulation 正交多码调制6) M-QAM 多进制正交调幅 1. A rate-distortion optimized wireless video streaming algorithm was developed which considers the allocation of multiple quadrature amplitude modulation(M-QAM) sub-channels,the number of scalable video layers,and the channel...